-
Nov 19, 2024 | 
link.aps.org | Quantum Optoelectronic Devices |Xi'an Jiaotong |Yunbin Yan |Shoukang Chang
Thermometry is a fundamental parameter estimation problem that is crucial for the advancement of natural sciences. One widely adopted approach to address this issue is the local thermometry theory, which employs classical and quantum Cramér-Rao bounds as benchmarks for thermometric precision. However, this theory is constrained to decrease temperature fluctuations around a known temperature value, hardly tackling the precision thermometry problem over a wide temperature range.
-
Aug 27, 2024 | 
link.aps.org | Muqaddar Abbas |Quantum Optoelectronic Devices |Xi'an Jiaotong |Seyyed Hossein Asadpour
We investigate the controlled manipulation of the Goos-Hänchen (GH) shift in probe light beams, encompassing both plane and Gaussian beams, when introduced into a cavity housing a highly resonant five-level atomic system exhibiting a combined tripod and Λ (CTL) configuration. This complex scheme arises from the interaction of three atomic ground states with two excited states through five distinct light fields.
-
Aug 13, 2024 | 
link.aps.org | Yuyang Tang |Quantum Optoelectronic Devices |Xi'an Jiaotong |Yu Yang
Quantum Fisher information (QFI) may exhibit the irregular behavior at the critical point of phase transitions of a physical system and be very sensitive to slight variations of some controlling parameters. This parameter sensitivity may be used for quantum parameter estimation or quantum sensing. In this study, taking the quantum Rabi model as an example, we investigate the critical properties of the QFI for the parameter estimation at the critical point of the SU(1,1) dynamic systems.
-
Jul 22, 2024 | 
link.aps.org | Quantum Optoelectronic Devices |Xi'an Jiaotong |Xin-Lei Hei |Yu-Bo Hou
We study the hybrid system of a high-quality yttrium-iron-garnet (YIG) sphere magnetically coupled to a superconducting flux qubit via the magnetic fields created by two persistent-current quantum states. When the flux qubit is operated away from its sweet point, a coherent nonlinear two-magnon interaction can be predicted; that is, the qubit is excited by absorbing a pair of magnons.
-
Jul 10, 2024 | 
link.aps.org | Xiao Wang |Quantum Optoelectronic Devices |Xi’an Jiaotong |Pengxiang Cheng
Unlike conventional imaging with two-dimensional array sensors featuring millions of pixels, ghost imaging enables the use of advanced detector technologies, giving advantages such as high signal-to-noise ratio, wide spectral range, and robustness to light scattering. However, this involves an extremely time-consuming measurement process, which means that it is difficult to meet the needs of high-quality real-time imaging.
-
Jul 9, 2024 | 
link.aps.org | Abdul Basit |Hamad Ali |Quantum Optoelectronic Devices |Xi'an Jiaotong
The entropic uncertainty relation imposes a limit on the accuracy of measurement outcomes of two conjugate observables, which can be reduced in the presence of quantum memory. We theoretically study the dynamical behaviors of the quantum-memory-assisted entropic uncertainty relation for a bipartite system under local nonequilibrium dephasing environments and a common nonequilibrium dephasing environment.
-
Jun 24, 2024 | 
link.aps.org | Quantum Optoelectronic Devices |Xi'an Jiaotong |Xing-Liang Dong |Jun-Cong Zheng
In this paper, we employ two two-level atoms and a Λ-type atom to connect two one-dimensional semi-infinite coupled resonator waveguides, respectively. The first configuration is a chiral setup, where incident photons undergo an elastic scattering process. We investigate the influence on the single-photon transfer rate of spatial coupling points between the small or giant atom and the waveguides.
-
Jun 11, 2024 | 
link.aps.org | Zhiyang Wei |Quantum Optoelectronic Devices |Xi'an Jiaotong |Chengming Tan
The spectral form factor (SFF) plays a crucial role in revealing the statistical properties of energy-level distributions in complex systems. It is one of the tools to diagnose quantum chaos and unravel the universal dynamics therein. The definition of SFF in most literature only encapsulates the two-level correlation. In this manuscript, we extend the definition of SSF to include the high-order correlation.
-
May 15, 2024 | 
pubs.aip.org | Quantum Optoelectronic Devices |Xi'an Jiaotong |S. X. Hu |Samuel E. Wurzel
Topics Gamma rays, Laser physics, Compton scattering, Photoemission, Spin angular momentum, Photon polarization Polarized γ rays are powerful probes for basic research and applications.1–5 For instances, polarized photons below 1 MeV enable the crystallographic probing and the biomedical imaging with femtosecond time resolution.4 In the energy range of several MeV to tens of MeV, polarized photo-induced nuclear reactions are highly effective in studying nuclear physics, transmutation, and...
-
May 13, 2024 | 
link.aps.org | Shuai Li |Quantum Optoelectronic Devices |Xi'an Jiaotong |Rui Tian
We study an unconventional many-body phase, i.e., a chiral odd-Chern-number lattice supersolid (CLSS) state, in a single-component Rydberg-dressed Fermi gas in an optical lattice. We find that in such a CLSS state, contradicting the common sense that typically the density modulation [charge-density-wave (CDW)] and superfluid (SF) orders compete against each other, there is an essentially different interplay between the coexisting two types of orders.
