A5002085960- Quantum Information and Cryptography
- Quantum optics and atomic interactions
- Mechanical and Optical Resonators
- Atomic and Subatomic Physics Research
- Orbital Angular Momentum in Optics
- Photonic and Optical Devices
- Optical Polarization and Ellipsometry
- Magneto-Optical Properties and Applications
- Quantum Chromodynamics and Particle Interactions
- Advanced Frequency and Time Standards
- Advanced Electrical Measurement Techniques
- Advanced Fiber Laser Technologies
- Laser-Matter Interactions and Applications
- Pulsars and Gravitational Waves Research
Jiangxi Science and Technology Normal University
2024
Jiangxi Normal University
2024
We study the phase sensitivity of an SU(1,1) interferometer with photon loss by using three different operations schemes, i.e., performing photon-addition operation on input port (Scheme A), interior B), and both them C). compare performance schemes in estimation same times to mode b. The results show that Scheme B improves best ideal case, C performs well against internal loss, especially case strong loss. All can beat standard quantum limit presence but break through a larger range.
The research focused on enhancing the measurement accuracy through use of non-Gaussian states has garnered increasing attention. In this study, we propose a scheme to input coherent state mixed with photon-catalyzed squeezed vacuum into Mach-Zender interferometer enhance phase accuracy. findings demonstrate that photon catalysis, particularly multi-photon can effectively improve sensitivity parity detection and quantum Fisher information. Moreover, situation losses in practical was studied....
Utilizing nonlinear elements, SU(1,1) interferometers demonstrate superior phase sensitivity compared to passive interferometers. However, the precision is significantly impacted by photon losses, particularly internal losses. We propose a theoretical scheme improve of measurement using homodyne detection implementing number-conserving operation (NCO), i.e., $a{a}^{\ifmmode\dagger\else\textdagger\fi{}}$ and ${a}^{\ifmmode\dagger\else\textdagger\fi{}}a$, inside interferometer, with coherent...
The research focused on enhancing the measurement accuracy through use of non-Gaussian states has garnered increasing attention. In this study, we propose a scheme to input coherent state mixed with photon-catalyzed squeezed vacuum into Mach-Zender interferometer enhance phase accuracy. findings demonstrate that photon catalysis, particularly multi-photon can effectively improve sensitivity parity detection and quantum Fisher information. Moreover, situation losses in practical was studied....
Utilizing nonlinear elements, SU(1,1) interferometers demonstrate superior phase sensitivity compared to passive interferometers. However, the precision is significantly impacted by photon losses, particularly internal losses. We propose a theoretical scheme improve of measurement using homodyne detection implementing number-conserving operations (PA-then-PS and PS-then-PA) within interferometer, with coherent state vacuum as input states. analyze effects on sensitivity, quantum Fisher...
In the field of quantum precision measurement, enhancing phase sensitivity is crucial for various applications, including metrology and sensing technologies. We theoretically investigate improvement in Fisher information achieved through multiphoton subtraction operations at output port an SU(1,1) interferometer under conditions photon loss. use vacuum coherent states as inputs detect outputs by intensity detection. The results indicate that internal losses within have a more significant...
Compared to passive interferometers, SU(1,1) interferometers exhibit superior phase sensitivity due the incorporation of nonlinear elements that enhance their ability detect shifts. However, precision these is significantly affected by photon losses, especially internal which can limit overall measurement accuracy. Addressing issues essential fully realize advantages in practical applications. We propose a theoretical scheme improve using homodyne detection implementing single-path local...
Abstract To improve the phase sensitivity, multi-photon subtraction schemes (multi-PSS) within SU(1,1) interferometer are proposed. The input states coherent state and vacuum state, detection method is homodyne detection. effects of on quantum Fisher information (QFI), Cramér-Rao bound (QCRB) analyzed under both ideal photon losses situations. It shown that internal operation can which becomes better performance by increasing number. also efficiently robustness against losses. By comparing...