A gravitational wave observatory operating beyond the quantum shot-noise limit

J. Abadie; B. P. Abbott; R. Abbott; T. D. Abbott; M. Abernathy; C. Adams; R. Adhikari; C. Affeldt; P. Ajith; B. Allen; G. S. Allen; E. Amador Ceron; D. Amariutei; R. S. Amin; S. B. Anderson; W. G. Anderson; K. Arai; M. A. Arain; M. C. Araya; S. M. Aston; D. Atkinson; P. Aufmuth; C. Aulbert; B. E. Aylott; S. Babak; P. Baker; S. Ballmer; D. Barker; B. Barr; P. Barriga; L. Barsotti; M. A. Barton; I. Bartos; R. Bassiri; M. Bastarrika; J. Batch; J. Bauchrowitz; B. Behnke; A. S. Bell; I. Belopolski; M. Benacquista; J. M. Berliner; A. Bertolini; J. Betzwieser; N. Beveridge; P. T. Beyersdorf; I. A. Bilenko; G. Billingsley; J. Birch; R. Biswas; E. Black; J. K. Blackburn; L. Blackburn; D. Blair; B. Bland; O. Bock; T. P. Bodiya; C. Bogan; R. Bondarescu; R. Bork; M. Born; S. Bose; P. R. Brady; V. B. Braginsky; J. E. Brau; J. Breyer; D. O. Bridges; M. Brinkmann; M. Britzger; A. F. Brooks; D. A. Brown; A. Brummitt; A. Buonanno; J. Burguet-Castell; O. Burmeister; R. L. Byer; L. Cadonati; J. B. Camp; P. Campsie; J. Cannizzo; K. Cannon; J. Cao; C. D. Capano; S. Caride; S. Caudill; M. Cavagliá; C. Cepeda; T. Chalermsongsak; E. Chalkley; P. Charlton; S. Chelkowski; Y. Chen; N. Christensen; H. Cho; S. S.Y. Chua; S. Chung; C. T.Y. Chung; G. Ciani; F. Clara; D. E. Clark; J. Clark; J. H. Clayton; R. Conte; D. Cook; T. R. Corbitt; M. Cordier; N. Cornish; A. Corsi; C. A. Costa; M. Coughlin; P. Couvares; D. M. Coward; D. C. Coyne; J. D.E. Creighton; T. D. Creighton; A. M. Cruise; A. Cumming; L. Cunningham; R. M. Cutler; K. Dahl; S. L. Danilishin; R. Dannenberg; K. Danzmann; B. Daudert; H. Daveloza; G. Davies; E. J. Daw; T. Dayanga; D. DeBra; J. Degallaix; T. Dent; V. Dergachev; R. DeRosa; R. DeSalvo; S. Dhurandhar; J. DiGuglielmo; I. DiPalma; M. Díz; F. Donovan; K. L. Dooley; S. Dorsher; R. W.P. Drever; J. C. Driggers; Z. Du; J. C. Dumas; S. Dwyer; T. Eberle; M. Edgar; M. Edwards; A. Effler; P. Ehrens; R. Engel; T. Etzel; K. Evans; M. Evans; T. Evans; M. Factourovich; S. Fairhurst; Y. Fan; B. F. Farr; W. Farr; D. Fazi; H. Fehrmann; D. Feldbaum; L. S. Finn; R. P. Fisher; M. Flanigan; S. Foley; E. Forsi; N. Fotopoulos; M. Frede; M. Frei; Z. Frei; A. Freise; R. Frey; T. T. Fricke; D. Friedrich; P. Fritschel; V. V. Frolov; P. J. Fulda; M. Fyffe; M. R. Ganija; J. Garcia; J. A. Garofoli; R. Geng; L. Gergely; S. Ghosh; J. A. Giaime; S. Giampanis; K. D. Giardina; C. Gill; E. Goetz; L. M. Goggin; G. González; M. L. Gorodetsky; S. Goßler; C. Graef; A. Grant; S. Gras; C. Gray; N. Gray; R. J.S. Greenhalgh; A. M. Gretarsson; R. Grosso; H. Grote; S. Grunewald; C. Guido; R. Gupta; E. K. Gustafson; R. Gustafson; T. Ha; B. Hage; J. M. Hallam; D. Hammer; G. Hammond; J. Hanks; C. Hanna; J. Hanson; J. Harms; G. M. Harry; I. W. Harry; E. D. Harstad; M. T. Hartman; K. Haughian; K. Hayama; J. Heefner; M. C. Heintze; M. A. Hendry; I. S. Heng; A. W. Heptonstall; V. Herrera; M. Hewitson; S. Hild; D. Hoak; K. A. Hodge; K. Holt; T. Hong; S. Hooper; D. J. Hosken; J. Hough; E. J. Howell; B. Hughey; T. Huynh-Dinh; S. Husa; S. H. Huttner; D. R. Ingram; R. Inta; T. Isogai; A. Ivanov; K. Izumi; LIGO Scientific Collaboration

doi:10.1038/NPHYS2083

A gravitational wave observatory operating beyond the quantum shot-noise limit

J. Abadie, B. P. Abbott, R. Abbott, T. D. Abbott, M. Abernathy, C. Adams, R. Adhikari, C. Affeldt, P. Ajith, B. Allen, G. S. Allen, E. Amador Ceron, D. Amariutei, R. S. Amin, S. B. Anderson, W. G. Anderson, K. Arai, M. A. Arain, M. C. Araya, S. M. AstonD. Atkinson, P. Aufmuth, C. Aulbert, B. E. Aylott, S. Babak, P. Baker, S. Ballmer, D. Barker, B. Barr, P. Barriga, L. Barsotti, M. A. Barton, I. Bartos, R. Bassiri, M. Bastarrika, J. Batch, J. Bauchrowitz, B. Behnke, A. S. Bell, I. Belopolski, M. Benacquista, J. M. Berliner, A. Bertolini, J. Betzwieser, N. Beveridge, P. T. Beyersdorf, I. A. Bilenko, G. Billingsley, J. Birch, R. Biswas, E. Black, J. K. Blackburn, L. Blackburn, D. Blair, B. Bland, O. Bock, T. P. Bodiya, C. Bogan, R. Bondarescu, R. Bork, M. Born, S. Bose, P. R. Brady, V. B. Braginsky, J. E. Brau, J. Breyer, D. O. Bridges, M. Brinkmann, M. Britzger, A. F. Brooks, D. A. Brown, A. Brummitt, A. Buonanno, J. Burguet-Castell, O. Burmeister, R. L. Byer, L. Cadonati, J. B. Camp, P. Campsie, J. Cannizzo, K. Cannon, J. Cao, C. D. Capano, S. Caride, S. Caudill, M. Cavagliá, C. Cepeda, T. Chalermsongsak, E. Chalkley, P. Charlton, S. Chelkowski, Y. Chen, N. Christensen, H. Cho, S. S.Y. Chua, S. Chung, C. T.Y. Chung, G. Ciani, F. Clara, D. E. Clark, J. Clark, J. H. Clayton, R. Conte, D. Cook, T. R. Corbitt, M. Cordier, N. Cornish, A. Corsi, C. A. Costa, M. Coughlin, P. Couvares, D. M. Coward, D. C. Coyne, J. D.E. Creighton, T. D. Creighton, A. M. Cruise, A. Cumming, L. Cunningham, R. M. Cutler, K. Dahl, S. L. Danilishin, R. Dannenberg, K. Danzmann, B. Daudert, H. Daveloza, G. Davies, E. J. Daw, T. Dayanga, D. DeBra, J. Degallaix, T. Dent, V. Dergachev, R. DeRosa, R. DeSalvo, S. Dhurandhar, J. DiGuglielmo, I. DiPalma, M. Díz, F. Donovan, K. L. Dooley, S. Dorsher, R. W.P. Drever, J. C. Driggers, Z. Du, J. C. Dumas, S. Dwyer, T. Eberle, M. Edgar, M. Edwards, A. Effler, P. Ehrens, R. Engel, T. Etzel, K. Evans, M. Evans, T. Evans, M. Factourovich, S. Fairhurst, Y. Fan, B. F. Farr, W. Farr, D. Fazi, H. Fehrmann, D. Feldbaum, L. S. Finn, R. P. Fisher, M. Flanigan, S. Foley, E. Forsi, N. Fotopoulos, M. Frede, M. Frei, Z. Frei, A. Freise, R. Frey, T. T. Fricke, D. Friedrich, P. Fritschel, V. V. Frolov, P. J. Fulda, M. Fyffe, M. R. Ganija, J. Garcia, J. A. Garofoli, R. Geng, L. Gergely, S. Ghosh, J. A. Giaime, S. Giampanis, K. D. Giardina, C. Gill, E. Goetz, L. M. Goggin, G. González, M. L. Gorodetsky, S. Goßler, C. Graef, A. Grant, S. Gras, C. Gray, N. Gray, R. J.S. Greenhalgh, A. M. Gretarsson, R. Grosso, H. Grote, S. Grunewald, C. Guido, R. Gupta, E. K. Gustafson, R. Gustafson, T. Ha, B. Hage, J. M. Hallam, D. Hammer, G. Hammond, J. Hanks, C. Hanna, J. Hanson, J. Harms, G. M. Harry, I. W. Harry, E. D. Harstad, M. T. Hartman, K. Haughian, K. Hayama, J. Heefner, M. C. Heintze, M. A. Hendry, I. S. Heng, A. W. Heptonstall, V. Herrera, M. Hewitson, S. Hild, D. Hoak, K. A. Hodge, K. Holt, T. Hong, S. Hooper, D. J. Hosken, J. Hough, E. J. Howell, B. Hughey, T. Huynh-Dinh, S. Husa, S. H. Huttner, D. R. Ingram, R. Inta, T. Isogai, A. Ivanov, K. Izumi, LIGO Scientific Collaboration

Research output: Contribution to journal › Article › peer-review

772 Citations (Scopus)

Abstract

Around the globe several observatories are seeking the first direct detection of gravitational waves (GWs). These waves are predicted by Einstein's general theory of relativity and are generated, for example, by black-hole binary systems. Present GW detectors are Michelson-type kilometre-scale laser interferometers measuring the distance changes between mirrors suspended in vacuum. The sensitivity of these detectors at frequencies above several hundred hertz is limited by the vacuum (zero-point) fluctuations of the electromagnetic field. A quantum technology - the injection of squeezed light - offers a solution to this problem. Here we demonstrate the squeezed-light enhancement of GEO 600, which will be the GW observatory operated by the LIGO Scientific Collaboration in its search for GWs for the next 3-4 years. GEO 600 now operates with its best ever sensitivity, which proves the usefulness of quantum entanglement and the qualification of squeezed light as a key technology for future GW astronomy.

Original language	English
Pages (from-to)	962-965
Number of pages	4
Journal	Nature Physics
Volume	7
Issue number	12
DOIs	https://doi.org/10.1038/NPHYS2083
Publication status	Published - 01 Jan 2011

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10.1038/NPHYS2083

Cite this

Abadie, J., Abbott, B. P., Abbott, R., Abbott, T. D., Abernathy, M., Adams, C., Adhikari, R., Affeldt, C., Ajith, P., Allen, B., Allen, G. S., Amador Ceron, E., Amariutei, D., Amin, R. S., Anderson, S. B., Anderson, W. G., Arai, K., Arain, M. A., Araya, M. C., ... LIGO Scientific Collaboration (2011). A gravitational wave observatory operating beyond the quantum shot-noise limit. Nature Physics, 7(12), 962-965. https://doi.org/10.1038/NPHYS2083

@article{e146b2e390aa43d6a356546520df0e48,

title = "A gravitational wave observatory operating beyond the quantum shot-noise limit",

abstract = "Around the globe several observatories are seeking the first direct detection of gravitational waves (GWs). These waves are predicted by Einstein's general theory of relativity and are generated, for example, by black-hole binary systems. Present GW detectors are Michelson-type kilometre-scale laser interferometers measuring the distance changes between mirrors suspended in vacuum. The sensitivity of these detectors at frequencies above several hundred hertz is limited by the vacuum (zero-point) fluctuations of the electromagnetic field. A quantum technology - the injection of squeezed light - offers a solution to this problem. Here we demonstrate the squeezed-light enhancement of GEO 600, which will be the GW observatory operated by the LIGO Scientific Collaboration in its search for GWs for the next 3-4 years. GEO 600 now operates with its best ever sensitivity, which proves the usefulness of quantum entanglement and the qualification of squeezed light as a key technology for future GW astronomy.",

keywords = "Gravitational waves",

author = "J. Abadie and Abbott, {B. P.} and R. Abbott and Abbott, {T. D.} and M. Abernathy and C. Adams and R. Adhikari and C. Affeldt and P. Ajith and B. Allen and Allen, {G. S.} and {Amador Ceron}, E. and D. Amariutei and Amin, {R. S.} and Anderson, {S. B.} and Anderson, {W. G.} and K. Arai and Arain, {M. A.} and Araya, {M. C.} and Aston, {S. M.} and D. Atkinson and P. Aufmuth and C. Aulbert and Aylott, {B. E.} and S. Babak and P. Baker and S. Ballmer and D. Barker and B. Barr and P. Barriga and L. Barsotti and Barton, {M. A.} and I. Bartos and R. Bassiri and M. Bastarrika and J. Batch and J. Bauchrowitz and B. Behnke and Bell, {A. S.} and I. Belopolski and M. Benacquista and Berliner, {J. M.} and A. Bertolini and J. Betzwieser and N. Beveridge and Beyersdorf, {P. T.} and Bilenko, {I. A.} and G. Billingsley and J. Birch and R. Biswas and E. Black and Blackburn, {J. K.} and L. Blackburn and D. Blair and B. Bland and O. Bock and Bodiya, {T. P.} and C. Bogan and R. Bondarescu and R. Bork and M. Born and S. Bose and Brady, {P. R.} and Braginsky, {V. B.} and Brau, {J. E.} and J. Breyer and Bridges, {D. O.} and M. Brinkmann and M. Britzger and Brooks, {A. F.} and Brown, {D. A.} and A. Brummitt and A. Buonanno and J. Burguet-Castell and O. Burmeister and Byer, {R. L.} and L. Cadonati and Camp, {J. B.} and P. Campsie and J. Cannizzo and K. Cannon and J. Cao and Capano, {C. D.} and S. Caride and S. Caudill and M. Cavagli{\'a} and C. Cepeda and T. Chalermsongsak and E. Chalkley and P. Charlton and S. Chelkowski and Y. Chen and N. Christensen and H. Cho and Chua, {S. S.Y.} and S. Chung and Chung, {C. T.Y.} and G. Ciani and F. Clara and Clark, {D. E.} and J. Clark and Clayton, {J. H.} and R. Conte and D. Cook and Corbitt, {T. R.} and M. Cordier and N. Cornish and A. Corsi and Costa, {C. A.} and M. Coughlin and P. Couvares and Coward, {D. M.} and Coyne, {D. C.} and Creighton, {J. D.E.} and Creighton, {T. D.} and Cruise, {A. M.} and A. Cumming and L. Cunningham and Cutler, {R. M.} and K. Dahl and Danilishin, {S. L.} and R. Dannenberg and K. Danzmann and B. Daudert and H. Daveloza and G. Davies and Daw, {E. J.} and T. Dayanga and D. DeBra and J. Degallaix and T. Dent and V. Dergachev and R. DeRosa and R. DeSalvo and S. Dhurandhar and J. DiGuglielmo and I. DiPalma and M. D{\'i}z and F. Donovan and Dooley, {K. L.} and S. Dorsher and Drever, {R. W.P.} and Driggers, {J. C.} and Z. Du and Dumas, {J. C.} and S. Dwyer and T. Eberle and M. Edgar and M. Edwards and A. Effler and P. Ehrens and R. Engel and T. Etzel and K. Evans and M. Evans and T. Evans and M. Factourovich and S. Fairhurst and Y. Fan and Farr, {B. F.} and W. Farr and D. Fazi and H. Fehrmann and D. Feldbaum and Finn, {L. S.} and Fisher, {R. P.} and M. Flanigan and S. Foley and E. Forsi and N. Fotopoulos and M. Frede and M. Frei and Z. Frei and A. Freise and R. Frey and Fricke, {T. T.} and D. Friedrich and P. Fritschel and Frolov, {V. V.} and Fulda, {P. J.} and M. Fyffe and Ganija, {M. R.} and J. Garcia and Garofoli, {J. A.} and R. Geng and L. Gergely and S. Ghosh and Giaime, {J. A.} and S. Giampanis and Giardina, {K. D.} and C. Gill and E. Goetz and Goggin, {L. M.} and G. Gonz{\'a}lez and Gorodetsky, {M. L.} and S. Go{\ss}ler and C. Graef and A. Grant and S. Gras and C. Gray and N. Gray and Greenhalgh, {R. J.S.} and Gretarsson, {A. M.} and R. Grosso and H. Grote and S. Grunewald and C. Guido and R. Gupta and Gustafson, {E. K.} and R. Gustafson and T. Ha and B. Hage and Hallam, {J. M.} and D. Hammer and G. Hammond and J. Hanks and C. Hanna and J. Hanson and J. Harms and Harry, {G. M.} and Harry, {I. W.} and Harstad, {E. D.} and Hartman, {M. T.} and K. Haughian and K. Hayama and J. Heefner and Heintze, {M. C.} and Hendry, {M. A.} and Heng, {I. S.} and Heptonstall, {A. W.} and V. Herrera and M. Hewitson and S. Hild and D. Hoak and Hodge, {K. A.} and K. Holt and T. Hong and S. Hooper and Hosken, {D. J.} and J. Hough and Howell, {E. J.} and B. Hughey and T. Huynh-Dinh and S. Husa and Huttner, {S. H.} and Ingram, {D. R.} and R. Inta and T. Isogai and A. Ivanov and K. Izumi and {LIGO Scientific Collaboration}",

year = "2011",

month = jan,

day = "1",

doi = "10.1038/NPHYS2083",

language = "English",

volume = "7",

pages = "962--965",

journal = "Nature Physics",

issn = "1745-2473",

publisher = "Nature Publishing Group",

number = "12",

}

Abadie, J, Abbott, BP, Abbott, R, Abbott, TD, Abernathy, M, Adams, C, Adhikari, R, Affeldt, C, Ajith, P, Allen, B, Allen, GS, Amador Ceron, E, Amariutei, D, Amin, RS, Anderson, SB, Anderson, WG, Arai, K, Arain, MA, Araya, MC, Aston, SM, Atkinson, D, Aufmuth, P, Aulbert, C, Aylott, BE, Babak, S, Baker, P, Ballmer, S, Barker, D, Barr, B, Barriga, P, Barsotti, L, Barton, MA, Bartos, I, Bassiri, R, Bastarrika, M, Batch, J, Bauchrowitz, J, Behnke, B, Bell, AS, Belopolski, I, Benacquista, M, Berliner, JM, Bertolini, A, Betzwieser, J, Beveridge, N, Beyersdorf, PT, Bilenko, IA, Billingsley, G, Birch, J, Biswas, R, Black, E, Blackburn, JK, Blackburn, L, Blair, D, Bland, B, Bock, O, Bodiya, TP, Bogan, C, Bondarescu, R, Bork, R, Born, M, Bose, S, Brady, PR, Braginsky, VB, Brau, JE, Breyer, J, Bridges, DO, Brinkmann, M, Britzger, M, Brooks, AF, Brown, DA, Brummitt, A, Buonanno, A, Burguet-Castell, J, Burmeister, O, Byer, RL, Cadonati, L, Camp, JB, Campsie, P, Cannizzo, J, Cannon, K, Cao, J, Capano, CD, Caride, S, Caudill, S, Cavagliá, M, Cepeda, C, Chalermsongsak, T, Chalkley, E, Charlton, P, Chelkowski, S, Chen, Y, Christensen, N, Cho, H, Chua, SSY, Chung, S, Chung, CTY, Ciani, G, Clara, F, Clark, DE, Clark, J, Clayton, JH, Conte, R, Cook, D, Corbitt, TR, Cordier, M, Cornish, N, Corsi, A, Costa, CA, Coughlin, M, Couvares, P, Coward, DM, Coyne, DC, Creighton, JDE, Creighton, TD, Cruise, AM, Cumming, A, Cunningham, L, Cutler, RM, Dahl, K, Danilishin, SL, Dannenberg, R, Danzmann, K, Daudert, B, Daveloza, H, Davies, G, Daw, EJ, Dayanga, T, DeBra, D, Degallaix, J, Dent, T, Dergachev, V, DeRosa, R, DeSalvo, R, Dhurandhar, S, DiGuglielmo, J, DiPalma, I, Díz, M, Donovan, F, Dooley, KL, Dorsher, S, Drever, RWP, Driggers, JC, Du, Z, Dumas, JC, Dwyer, S, Eberle, T, Edgar, M, Edwards, M, Effler, A, Ehrens, P, Engel, R, Etzel, T, Evans, K, Evans, M, Evans, T, Factourovich, M, Fairhurst, S, Fan, Y, Farr, BF, Farr, W, Fazi, D, Fehrmann, H, Feldbaum, D, Finn, LS, Fisher, RP, Flanigan, M, Foley, S, Forsi, E, Fotopoulos, N, Frede, M, Frei, M, Frei, Z, Freise, A, Frey, R, Fricke, TT, Friedrich, D, Fritschel, P, Frolov, VV, Fulda, PJ, Fyffe, M, Ganija, MR, Garcia, J, Garofoli, JA, Geng, R, Gergely, L, Ghosh, S, Giaime, JA, Giampanis, S, Giardina, KD, Gill, C, Goetz, E, Goggin, LM, González, G, Gorodetsky, ML, Goßler, S, Graef, C, Grant, A, Gras, S, Gray, C, Gray, N, Greenhalgh, RJS, Gretarsson, AM, Grosso, R, Grote, H, Grunewald, S, Guido, C, Gupta, R, Gustafson, EK, Gustafson, R, Ha, T, Hage, B, Hallam, JM, Hammer, D, Hammond, G, Hanks, J, Hanna, C, Hanson, J, Harms, J, Harry, GM, Harry, IW, Harstad, ED, Hartman, MT, Haughian, K, Hayama, K, Heefner, J, Heintze, MC, Hendry, MA, Heng, IS, Heptonstall, AW, Herrera, V, Hewitson, M, Hild, S, Hoak, D, Hodge, KA, Holt, K, Hong, T, Hooper, S, Hosken, DJ, Hough, J, Howell, EJ, Hughey, B, Huynh-Dinh, T, Husa, S, Huttner, SH, Ingram, DR, Inta, R, Isogai, T, Ivanov, A, Izumi, K & LIGO Scientific Collaboration 2011, 'A gravitational wave observatory operating beyond the quantum shot-noise limit', Nature Physics, vol. 7, no. 12, pp. 962-965. https://doi.org/10.1038/NPHYS2083

TY - JOUR

T1 - A gravitational wave observatory operating beyond the quantum shot-noise limit

AU - Abadie, J.

AU - Abbott, B. P.

AU - Abbott, R.

AU - Abbott, T. D.

AU - Abernathy, M.

AU - Adams, C.

AU - Adhikari, R.

AU - Affeldt, C.

AU - Ajith, P.

AU - Allen, B.

AU - Allen, G. S.

AU - Amador Ceron, E.

AU - Amariutei, D.

AU - Amin, R. S.

AU - Anderson, S. B.

AU - Anderson, W. G.

AU - Arai, K.

AU - Arain, M. A.

AU - Araya, M. C.

AU - Aston, S. M.

AU - Atkinson, D.

AU - Aufmuth, P.

AU - Aulbert, C.

AU - Aylott, B. E.

AU - Babak, S.

AU - Baker, P.

AU - Ballmer, S.

AU - Barker, D.

AU - Barr, B.

AU - Barriga, P.

AU - Barsotti, L.

AU - Barton, M. A.

AU - Bartos, I.

AU - Bassiri, R.

AU - Bastarrika, M.

AU - Batch, J.

AU - Bauchrowitz, J.

AU - Behnke, B.

AU - Bell, A. S.

AU - Belopolski, I.

AU - Benacquista, M.

AU - Berliner, J. M.

AU - Bertolini, A.

AU - Betzwieser, J.

AU - Beveridge, N.

AU - Beyersdorf, P. T.

AU - Bilenko, I. A.

AU - Billingsley, G.

AU - Birch, J.

AU - Biswas, R.

AU - Black, E.

AU - Blackburn, J. K.

AU - Blackburn, L.

AU - Blair, D.

AU - Bland, B.

AU - Bock, O.

AU - Bodiya, T. P.

AU - Bogan, C.

AU - Bondarescu, R.

AU - Bork, R.

AU - Born, M.

AU - Bose, S.

AU - Brady, P. R.

AU - Braginsky, V. B.

AU - Brau, J. E.

AU - Breyer, J.

AU - Bridges, D. O.

AU - Brinkmann, M.

AU - Britzger, M.

AU - Brooks, A. F.

AU - Brown, D. A.

AU - Brummitt, A.

AU - Buonanno, A.

AU - Burguet-Castell, J.

AU - Burmeister, O.

AU - Byer, R. L.

AU - Cadonati, L.

AU - Camp, J. B.

AU - Campsie, P.

AU - Cannizzo, J.

AU - Cannon, K.

AU - Cao, J.

AU - Capano, C. D.

AU - Caride, S.

AU - Caudill, S.

AU - Cavagliá, M.

AU - Cepeda, C.

AU - Chalermsongsak, T.

AU - Chalkley, E.

AU - Charlton, P.

AU - Chelkowski, S.

AU - Chen, Y.

AU - Christensen, N.

AU - Cho, H.

AU - Chua, S. S.Y.

AU - Chung, S.

AU - Chung, C. T.Y.

AU - Ciani, G.

AU - Clara, F.

AU - Clark, D. E.

AU - Clark, J.

AU - Clayton, J. H.

AU - Conte, R.

AU - Cook, D.

AU - Corbitt, T. R.

AU - Cordier, M.

AU - Cornish, N.

AU - Corsi, A.

AU - Costa, C. A.

AU - Coughlin, M.

AU - Couvares, P.

AU - Coward, D. M.

AU - Coyne, D. C.

AU - Creighton, J. D.E.

AU - Creighton, T. D.

AU - Cruise, A. M.

AU - Cumming, A.

AU - Cunningham, L.

AU - Cutler, R. M.

AU - Dahl, K.

AU - Danilishin, S. L.

AU - Dannenberg, R.

AU - Danzmann, K.

AU - Daudert, B.

AU - Daveloza, H.

AU - Davies, G.

AU - Daw, E. J.

AU - Dayanga, T.

AU - DeBra, D.

AU - Degallaix, J.

AU - Dent, T.

AU - Dergachev, V.

AU - DeRosa, R.

AU - DeSalvo, R.

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AU - LIGO Scientific Collaboration

PY - 2011/1/1

Y1 - 2011/1/1

N2 - Around the globe several observatories are seeking the first direct detection of gravitational waves (GWs). These waves are predicted by Einstein's general theory of relativity and are generated, for example, by black-hole binary systems. Present GW detectors are Michelson-type kilometre-scale laser interferometers measuring the distance changes between mirrors suspended in vacuum. The sensitivity of these detectors at frequencies above several hundred hertz is limited by the vacuum (zero-point) fluctuations of the electromagnetic field. A quantum technology - the injection of squeezed light - offers a solution to this problem. Here we demonstrate the squeezed-light enhancement of GEO 600, which will be the GW observatory operated by the LIGO Scientific Collaboration in its search for GWs for the next 3-4 years. GEO 600 now operates with its best ever sensitivity, which proves the usefulness of quantum entanglement and the qualification of squeezed light as a key technology for future GW astronomy.

AB - Around the globe several observatories are seeking the first direct detection of gravitational waves (GWs). These waves are predicted by Einstein's general theory of relativity and are generated, for example, by black-hole binary systems. Present GW detectors are Michelson-type kilometre-scale laser interferometers measuring the distance changes between mirrors suspended in vacuum. The sensitivity of these detectors at frequencies above several hundred hertz is limited by the vacuum (zero-point) fluctuations of the electromagnetic field. A quantum technology - the injection of squeezed light - offers a solution to this problem. Here we demonstrate the squeezed-light enhancement of GEO 600, which will be the GW observatory operated by the LIGO Scientific Collaboration in its search for GWs for the next 3-4 years. GEO 600 now operates with its best ever sensitivity, which proves the usefulness of quantum entanglement and the qualification of squeezed light as a key technology for future GW astronomy.

KW - Gravitational waves

UR - http://www.scopus.com/inward/record.url?scp=84921022931&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84921022931&partnerID=8YFLogxK

U2 - 10.1038/NPHYS2083

DO - 10.1038/NPHYS2083

M3 - Article

SN - 1745-2473

VL - 7

SP - 962

EP - 965

JO - Nature Physics

JF - Nature Physics

IS - 12

ER -

A gravitational wave observatory operating beyond the quantum shot-noise limit

Abstract

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