Quantum illumination with asymmetrically squeezed two-mode light
- URL: http://arxiv.org/abs/2103.17006v2
- Date: Mon, 19 Jul 2021 23:22:53 GMT
- Title: Quantum illumination with asymmetrically squeezed two-mode light
- Authors: Yonggi Jo, Taek Jeong, Junghyun Kim, Duk Y. Kim, Yong Sup Ihn, Zaeill
Kim, Su-Yong Lee
- Abstract summary: We show that the performance of the optimal receiver is enhanced by local squeezing operation on a signal mode.
Under a fixed mean photon number of the signal mode, the ASTM state can be close to the TMSV state in the performance of QI.
- Score: 0.504905391284093
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We propose Gaussian quantum illumination(QI) protocol exploiting
asymmetrically squeezed two-mode(ASTM) state that is generated by applying
single-mode squeezing operations on each mode of an initial two-mode squeezed
vacuum(TMSV) state, in order to overcome the limited brightness of a TMSV
state. We show that the performance of the optimal receiver is enhanced by
local squeezing operation on a signal mode whereas the performance of a
realistic receiver can be enhanced by local squeezing operations on both input
modes. Under a fixed mean photon number of the signal mode, the ASTM state can
be close to the TMSV state in the performance of QI while there is a threshold
of beating classical illumination in the mean photon number of the initial TMSV
state. We also verify that quantum discord cannot be a resource of quantum
advantage in the Gaussian QI using the ASTM state, which is a counterexample of
a previous claim.
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