Quantum multiparameter estimation with multi-mode photon catalysis
entangled squeezed state
- URL: http://arxiv.org/abs/2210.15381v1
- Date: Thu, 27 Oct 2022 12:45:47 GMT
- Title: Quantum multiparameter estimation with multi-mode photon catalysis
entangled squeezed state
- Authors: Huan Zhang, Wei Ye, Shoukang Chang, Ying Xia, Liyun Hu, Zeyang Liao
- Abstract summary: We propose a method to generate the multi-mode entangled squeezed vacuum states (MECSVS) by embedding the cross-Kerr nonlinear medium into the Mach-Zehnder interferometer.
This method realizes the exchange of quantum states between different modes based on Fredkin gate.
- Score: 8.939491159598491
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We propose a method to generate the multi-mode entangled catalysis squeezed
vacuum states (MECSVS) by embedding the cross-Kerr nonlinear medium into the
Mach-Zehnder interferometer. This method realizes the exchange of quantum
states between different modes based on Fredkin gate. In addition, we study the
MECSVS as the probe state of multi-arm optical interferometer to realize
multi-phase simultaneous estimation. The results show that the quantum
Cramer-Rao bound (QCRB) of phase estimation can be improved by increasing the
number of catalytic photons or decreasing the transmissivity of the optical
beam splitter using for photon catalysis. In addition, we also show that even
if there is photon loss, the QCRB of our photon catalysis scheme is lower than
that of the ideal entangled squeezed vacuum states (ESVS), which shows that by
performing the photon catalytic operation is more robust against photon loss
than that without the catalytic operation. The results here can find important
applications in quantum metrology for multiparatmeter estimation.
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