A. Heidmann; R. J. Horowicz; S. Reynaud; E. Giacobino; C. Fabre & G. Camy. Observation of Quantum Noise Reduction on Twin Laser Beams. Phys. Rev. Lett. 1987, 59 (22): 2555. Bibcode:1987PhRvL..59.2555H. doi:10.1103/PhysRevLett.59.2555.
Eberle, T.; Steinlechner, S.; Bauchrowitz, J.; Händchen, V.; Vahlbruch, H.; Mehmet, M.; Müller-Ebhardt, H.; Schnabel, R. Quantum Enhancement of the Zero-Area Sagnac Interferometer Topology for Gravitational Wave Detection. Phys. Rev. Lett. 2010, 104 (25): 251102. Bibcode:2010PhRvL.104y1102E. PMID 20867358. arXiv:1007.0574. doi:10.1103/PhysRevLett.104.251102.
A. Heidmann; R. J. Horowicz; S. Reynaud; E. Giacobino; C. Fabre & G. Camy. Observation of Quantum Noise Reduction on Twin Laser Beams. Phys. Rev. Lett. 1987, 59 (22): 2555. Bibcode:1987PhRvL..59.2555H. doi:10.1103/PhysRevLett.59.2555.
Eberle, T.; Steinlechner, S.; Bauchrowitz, J.; Händchen, V.; Vahlbruch, H.; Mehmet, M.; Müller-Ebhardt, H.; Schnabel, R. Quantum Enhancement of the Zero-Area Sagnac Interferometer Topology for Gravitational Wave Detection. Phys. Rev. Lett. 2010, 104 (25): 251102. Bibcode:2010PhRvL.104y1102E. PMID 20867358. arXiv:1007.0574. doi:10.1103/PhysRevLett.104.251102.