scholarly journals Quantum Optical Realization of Arbitrary Linear Transformations Allowing for Loss and Gain

2018 ◽  
Vol 8 (2) ◽  
Author(s):  
N. Tischler ◽  
C. Rockstuhl ◽  
K. Słowik
Keyword(s):  
Linear Transformations ◽  
Quantum Optical ◽  
Optical Realization

scholarly journals Quantum optical realization of classical linear stochastic systems

Automatica ◽  
2013 ◽  
Vol 49 (10) ◽  
pp. 3090-3096 ◽  
Author(s):  
Shi Wang ◽  
Hendra I. Nurdin ◽  
Guofeng Zhang ◽  
Matthew R. James
Keyword(s):  
Stochastic Systems ◽  
Linear Stochastic Systems ◽  
Quantum Optical ◽  
Optical Realization

scholarly journals Double-port measurements for robust quantum optical metrology

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Wei Zhong ◽  
Lan Zhou ◽  
Yu-Bo Sheng
Keyword(s):  
Optical Metrology ◽  
Quantum Optical

scholarly journals Transport of pseudothermal photons through an anharmonic cavity

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dmitriy S. Shapiro
Keyword(s):  
Pauli Principle ◽  
Optical Systems ◽  
Frequency Noise ◽  
Continuous Transition ◽  
Noise Current ◽  
Nonperturbative Solution ◽  
Occupation Numbers ◽  
Fundamental Reason ◽  
The Rich ◽  
Quantum Optical

AbstractUnder nonequilibrium conditions, quantum optical systems reveal unusual properties that might be distinct from those in condensed matter. The fundamental reason is that photonic eigenstates can have arbitrary occupation numbers, whereas in electronic systems these are limited by the Pauli principle. Here, we address the steady-state transport of pseudothermal photons between two waveguides connected through a cavity with Bose–Hubbard interaction between photons. One of the waveguides is subjected to a broadband incoherent pumping. We predict a continuous transition between the regimes of Lorentzian and Gaussian chaotic light emitted by the cavity. The rich variety of nonequilibrium transport regimes is revealed by the zero-frequency noise. There are three limiting cases, in which the noise-current relation is characterized by a power-law, $$S\propto J^\gamma$$ S ∝ J γ . The Lorentzian light corresponds to Breit-Wigner-like transmission and $$\gamma =2$$ γ = 2 . The Gaussian regime corresponds to many-body transport with the shot noise ($$\gamma =1$$ γ = 1 ) at large currents; at low currents, however, we find an unconventional exponent $$\gamma =3/2$$ γ = 3 / 2 indicating a nontrivial interplay between multi-photon transitions and incoherent pumping. The nonperturbative solution for photon dephasing is obtained in the framework of the Keldysh field theory and Caldeira-Leggett effective action. These findings might be relevant for experiments on photon blockade in superconducting qubits, thermal states transfer, and photon statistics probing.

Nonuniform Spatial Deformation of Light Fields by Locally Linear Transformations

2017 ◽  
Vol 36 (4) ◽  
pp. 1
Author(s):  
Clemens Birklbauer ◽  
David C. Schedl ◽  
Oliver Bimber
Keyword(s):  
Light Fields ◽  
Linear Transformations ◽  
Spatial Deformation ◽  
Locally Linear
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