47 citations · 259 across the 24 of their papers we have counts for
12 papers · 1 filter
Chirality, Nonreciprocity and Symmetries for a Giant Atom
Luting Xu, Lingzhen Guo
Chiral and nonreciprocal quantum devices are crucial for signal routing and processing in a quantum network. In this work, we study the chirality and nonreciprocity of a giant atom…
Catch and release of propagating bosonic field with non-Markovian giant atom
Luting Xu, Lingzhen Guo
The non-Markovianity of physical systems is considered to be a valuable resource that has potential applications to quantum information processing. The control of traveling quantum…
Quality analysis for precision metrology based on joint weak measurements without discarding readout data
Lupei Qin, Luting Xu, Xin-Qi Li
We present a theoretical analysis for the metrology quality of joint weak measurements (JWM), in close comparison with the weak-value-amplification (WVA) technique. We point out th…
Quantum transfer through a continuum under continuous monitoring
Luting Xu, Xin-Qi Li
In this work we extend our previous studies on the quantum transfer of a particle through a finite-bandwidth continuum under frequent detections, by replacing the assumed frequent…
Theory for frequent measurements of spontaneous emissions in non-Markovian environment: beyond Lorentzian spectrum
Luting Xu, Xin-Qi Li
The measurement-result-conditioned evolution of a system (e.g. an atom) with spontaneous emissions of photons is well described by the quantum trajectory (QT) theory. In this work…
Counting statistics of photon emissions detected in non-Markovian environment
Luting Xu, Xin-Qi Li
In this work we present a large-deviation analysis for the counting statistics of atomic spontaneous emissions continuously detected in finite-bandwidth non-Markovian environment.…
Qubit state tomography in superconducting circuit via weak measurements
Lupei Qin, Luting Xu, Wei Feng +1
The standard method of "measuring" quantum wavefunction is the technique of {\it indirect} quantum state tomography. Owing to conceptual novelty and possible advantages, an alterna…
Quantum trajectories under frequent measurements in non-Markovian environment
Luting Xu, Xin-Qi Li
In this work we generalize the quantum trajectory (QT) theory from Markovian to non-Markovian environments. We model the non-Markovian environment by using a Lorentzian spectral de…
Quantum transfer through a non-Markovian environment under frequent measurements and Zeno effect
Luting Xu, Yunshan Cao, Xin-Qi Li +2
We study transitions of a particle between two wells, separated by a reservoir, under the condition that the particle is not detected in the reservoir. Conventional quantum traject…
Undetectable quantum transfer through a continuum
Jing Ping, Yin Ye, Xin-Qi Li +2
We demonstrate that a quantum particle, initially prepared in a quantum well, can propagate through a reservoir with a continuous spectrum and reappear in a distant well without be…
Generating and stabilizing the GHZ state in circuit QED: Joint measurement, Zeno effect and feedback
Wei Feng, Peiyue Wang, Xinmei Ding +2
In solid-state circuit QED system, we extend the previous study of generating and stabilizing two-qubit Bell state [Phys. Rev. A 82, 032335 (2010)], to three-qubit GHZ state. In di…
Deterministic creation and stabilization of entanglement in circuit QED by homodyne-mediated feedback control
Zhuo Liu, Lulin Kuang, Kai Hu +4
In the solid-state circuit QED system and based on the homodyne measurement in dispersive regime, we demonstrate that a homodyne-current-based feedback can create and stabilize hig…