Details
| Original language | English |
|---|---|
| Article number | 063602 |
| Number of pages | 7 |
| Journal | Physical review letters |
| Volume | 133 |
| Issue number | 6 |
| Publication status | Published - 8 Aug 2024 |
Abstract
Conventional heterodyne readout schemes are now under reconsideration due to the realization of techniques to evade its inherent 3 dB signal-to-noise penalty. The application of high-frequency, quadrature-entangled, two-mode squeezed states can further improve the readout sensitivity of audio-band signals. In this Letter, we experimentally demonstrate quantum-enhanced heterodyne readout of two spatially distinct interferometers with direct optical signal combination, circumventing the 3 dB heterodyne signal-to-noise penalty. Applying a high-frequency, quadrature-entangled, two-mode squeezed state, we show further signal-to-noise improvement of an injected audio band signal of 3.5 dB. This technique is applicable for quantum-limited high-precision experiments, with application to searches for quantum gravity, searches for dark matter, gravitational wave detection, and wavelength-multiplexed quantum communication.
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In: Physical review letters, Vol. 133, No. 6, 063602, 08.08.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Quantum Enhanced Balanced Heterodyne Readout for Differential Interferometry
AU - Gould, Daniel W.
AU - Adya, Vaishali B.
AU - Chua, Sheon S.Y.
AU - Junker, Jonas
AU - Wilken, Dennis
AU - McRae, Terry G.
AU - Slagmolen, Bram J.J.
AU - Yap, Min Jet
AU - Ward, Robert L.
AU - Heurs, Michèle
AU - McClelland, David E.
N1 - Publisher Copyright: © 2024 American Physical Society.
PY - 2024/8/8
Y1 - 2024/8/8
N2 - Conventional heterodyne readout schemes are now under reconsideration due to the realization of techniques to evade its inherent 3 dB signal-to-noise penalty. The application of high-frequency, quadrature-entangled, two-mode squeezed states can further improve the readout sensitivity of audio-band signals. In this Letter, we experimentally demonstrate quantum-enhanced heterodyne readout of two spatially distinct interferometers with direct optical signal combination, circumventing the 3 dB heterodyne signal-to-noise penalty. Applying a high-frequency, quadrature-entangled, two-mode squeezed state, we show further signal-to-noise improvement of an injected audio band signal of 3.5 dB. This technique is applicable for quantum-limited high-precision experiments, with application to searches for quantum gravity, searches for dark matter, gravitational wave detection, and wavelength-multiplexed quantum communication.
AB - Conventional heterodyne readout schemes are now under reconsideration due to the realization of techniques to evade its inherent 3 dB signal-to-noise penalty. The application of high-frequency, quadrature-entangled, two-mode squeezed states can further improve the readout sensitivity of audio-band signals. In this Letter, we experimentally demonstrate quantum-enhanced heterodyne readout of two spatially distinct interferometers with direct optical signal combination, circumventing the 3 dB heterodyne signal-to-noise penalty. Applying a high-frequency, quadrature-entangled, two-mode squeezed state, we show further signal-to-noise improvement of an injected audio band signal of 3.5 dB. This technique is applicable for quantum-limited high-precision experiments, with application to searches for quantum gravity, searches for dark matter, gravitational wave detection, and wavelength-multiplexed quantum communication.
UR - http://www.scopus.com/inward/record.url?scp=85200914768&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2401.04940
DO - 10.48550/arXiv.2401.04940
M3 - Article
C2 - 39178444
AN - SCOPUS:85200914768
VL - 133
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 6
M1 - 063602
ER -