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Quantum spin squeezing
This paper reviews quantum spin squeezing, which characterizes the sensitivity of a state
with respect to SU (2) rotations, and is significant for both entanglement detection and high …
with respect to SU (2) rotations, and is significant for both entanglement detection and high …
Dynamics of finite dimensional non-hermitian systems with indefinite metric
We discuss the time evolution of physical finite dimensional systems which are modelled by
non-hermitian Hamiltonians. We address both general non-hermitian Hamiltonians and …
non-hermitian Hamiltonians. We address both general non-hermitian Hamiltonians and …
Exceptional Points from the Hamiltonian of a hybrid physical system: Squeezing and anti-Squeezing
We study the appearance of Exceptional Points in a hybrid system composed of a
superconducting flux-qubit and an ensemble of nitrogen-vacancy colour centres in diamond …
superconducting flux-qubit and an ensemble of nitrogen-vacancy colour centres in diamond …
Use of discrete Wigner functions in the study of decoherence of a system of superconducting flux-qubits
The persistence of coherence of a system of superconducting flux-qubits, in the presence of
an ensemble of electrons, is analysed. The time evolution of the system is solved exactly …
an ensemble of electrons, is analysed. The time evolution of the system is solved exactly …
Fast spin squeezing by distance-selective long-range interactions with Rydberg molecule dressing
H Wu, XY Lin, ZX Ding, SB Zheng… - Science China Physics …, 2022 - Springer
We propose a Rydberg molecule dressing scheme to create strong and long-ranged
interactions at selective distances. This is achieved through laser coupling ground-state …
interactions at selective distances. This is achieved through laser coupling ground-state …
Squeezing in a spin chain with site-dependent periodic and long-range interactions
Numerical and analytical results for the squeezing factor, ζ2, in a pseudo-spin s-1/2 chain.
The open chain is composed by N two-level atoms with site-dependent interactions. The …
The open chain is composed by N two-level atoms with site-dependent interactions. The …
Use of discrete Wigner functions in the study of a hybrid dissipative system
The persistence of coherence in a hybrid dissipative system, which is composed of
superconducting flux-qubits (SFQs) and an electron ensemble, is analyzed. Both the …
superconducting flux-qubits (SFQs) and an electron ensemble, is analyzed. Both the …
Study of decoherence in a system of superconducting flux-qubits interacting with an ensemble of electrons
The degree of coherence in a hybrid system composed of superconducting flux-qubits and
an electron ensemble is analysed. Both, the interactions among the electrons and among …
an electron ensemble is analysed. Both, the interactions among the electrons and among …
Spin observables in an atomic CQE system
A cavity quantum electrodynamical Hamiltonian is solved to study spin observables, such as
the orientation and fluctuations of the total spin and entropy, in a system of N two-level atoms …
the orientation and fluctuations of the total spin and entropy, in a system of N two-level atoms …
Nonclassical properties of coherent states and excited coherent states for continuous spectra
Based on the definition of coherent states for continuous spectra and analogous to photon-
added coherent states for discrete spectra, we introduce the excited coherent states for …
added coherent states for discrete spectra, we introduce the excited coherent states for …