Effects of real environments on the performance of quantum Lidar

Wang Qiang; Hao Lili; Tang Hongxia; Li Xianli; Mu Haiwei; Han Lianfu; Zhao Yuan

doi:10.3788/IRLA201847.S106006

The effects of loss and noise(real environments) on the performance of quantum lidar with odd coherent superposition states source(OCRS) was investigeted. The general expression of conditional probabilities and parity photon counting measurement strategies were exploited to derive the mean value of the output signal and its phase sensitivity from the Mach-Zehnder interferometer(MZI). It can be found from the output signal that loss destroys the coherence and further descents the performance of lidar. The numerical calculation shows that the odd and even interference fringes emerge in the whole interference pattern, and the odd interference term which represents the coherence is extremely sensitive to particle loss. The odd coherent states quantum lidar outperforms the performance achieved by the traditional coherent states(CS) lidar only in small loss regimes. However, in the noisy environments, OCRS gives the better resolution and sensitivity than CS in the regions of к0.3 and к0.06, respectively.

Effects of real environments on the performance of quantum Lidar

1. Department of Physics,Northeast Petroleum University,Daqing 163318,China;

2. College of Electrical Engineering,Suihua University,Suihua 152000,China;

3. Department of Physics,Harbin Institute of Technology,Harbin 150001,China

Received Date: 2018-02-15

Rev Recd Date: 2018-05-11

Publish Date: 2018-06-25

Key words:

Abstract: The effects of loss and noise(real environments) on the performance of quantum lidar with odd coherent superposition states source(OCRS) was investigeted. The general expression of conditional probabilities and parity photon counting measurement strategies were exploited to derive the mean value of the output signal and its phase sensitivity from the Mach-Zehnder interferometer(MZI). It can be found from the output signal that loss destroys the coherence and further descents the performance of lidar. The numerical calculation shows that the odd and even interference fringes emerge in the whole interference pattern, and the odd interference term which represents the coherence is extremely sensitive to particle loss. The odd coherent states quantum lidar outperforms the performance achieved by the traditional coherent states(CS) lidar only in small loss regimes. However, in the noisy environments, OCRS gives the better resolution and sensitivity than CS in the regions of к0.3 and к0.06, respectively.

HTML

Reference (16)

[1]	Dowling, J P. Quantum optical metrology-the lowdown on high N00N states[J]. Contemp Phys, 2008, 49:125.
[2]	Caves C M. Quantum-mechanical noise in an interferometer[J]. Phys Rev D, 1981, 23:1693.
[3]	Wang Q, Zhang Y, Xu Y, et al. Pseudorandom modulation quantum secured lidar[J]. Optik-International Journal for Light and Electron Optics, 2015, 126:3344.
[4]	Wang Qiang, Zhang Yong, Hao Lili, et al. Super-resolving quantum LADAR with odd coherent superposition states sources at shot noise limit[J]. Infrared and Laser Engineering, 2015, 44(9):2569. (in Chinese)
[5]	Boto A N, Kok P, Abrams D S, et al. Quantum interferometric optical lithography:exploiting entanglement to beat the diffraction limit[J]. Phys Rev Lett, 2000, 85:2733.
[6]	Kok P, Lee H, Dowling J P. Creation of large-photon-number path entanglement conditioned on photodetection[J]. Phys Rev A, 2002, 65:052104.
[7]	Sanders B C. Quantum dynamics of the nonlinear rotator and the effects of continual spin measurement[J]. Phys Rev A, 1989, 40:2417.
[8]	Gao Y, Anisimov P M, Wildfeuer C F, et al. Super-resolution at the shot-noise limit with coherent states and photon-number-resolving detectors[J]. J Opt Soc Am B, 2010, 27:A170.
[9]	Jiang K, Lee H, Gerry C C, et al. Super-resolving quantum radar:Coherent-state sources with homodyne detection suffice to beat the diffraction limit[J]. J Appl Phys, 2013, 114:193102.
[10]	Distante E, Je?ek M, Andersen U L. Deterministic superresolution with coherent states at the shot noise limit[J]. Phys Rev Lett, 2013, 111:033603.
[11]	Cohen L, Istrati D, Dovrat L, et al. Super-resolved phase measurements at the shot noise limit by parity measurement[J]. Optics Express, 2014, 22:11945.
[12]	Feng X M, Jin G R, Yang W. Quantum interferometry with binary-outcome measurements in the presence of phase diffusion[J]. Phys Rev A, 2014, 90:013807.
[13]	Glauber R J. Coherent and incoherent states of the radiation field[J]. Phys Rev, 1963, 131:2766.
[14]	Dodonov V V, Malkin I A, Man'Ko V I. Even and odd coherent states and excitations of a singular oscillator[J]. Physica, 1974, 72:597.
[15]	Brivio D, Cialdi S, Vezzoli S, et al. Experimental estimation of one-parameter qubit gates in the presence of phase diffusion[J]. Phys Rev A, 2010, 81:012305.
[16]	Genoni M G, Olivares S, Brivio D, et al. Optical interferometry in the presence of large phase diffusion[J]. Phys Rev A, 2012, 85:043817.

Effects of real environments on the performance of quantum Lidar

doi: 10.3788/IRLA201847.S106006

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Related

Proportional views