Effects of spin-orbit coupling on Jaynes-Cummings and Tavis-Cummings models

Zhu, Chuanzhou; Lin, D.; Pu, Han

doi:10.1103/physreva.94.053621

Cited by 28 publications

(17 citation statements)

References 64 publications

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“…We experimentally demonstrate the emergence of SOC in a Bose-Einstein condensate (BEC) via the use of a cavity field possessing its own quantum dynamics. Our experiment realizes key aspects of several (previously unrealized) theoretical proposals for creating exotic quantum many-body states via cavity-induced dynamical gauge fields, including SOC [16][17][18][19][20][21][22][23][24][25][26][27][28] [29]. By doing so, this work opens avenues toward observing exotic phenomena predicted in these works as well as the creation of dynamical gauge fields, complementing recent progress demonstrating density-dependent gauge fields using optical lattices [30,31].…”

supporting

confidence: 57%

Dynamical Spin-Orbit Coupling of a Quantum Gas

2019

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We realize the dynamical 1D spin-orbit-coupling (SOC) of a Bose-Einstein condensate confined within an optical cavity. The SOC emerges through spin-correlated momentum impulses delivered to the atoms via Raman transitions. These are effected by classical pump fields acting in concert with the quantum dynamical cavity field. Above a critical pump power, the Raman coupling emerges as the atoms superradiantly populate the cavity mode with photons. Concomitantly, these photons cause a back-action onto the atoms, forcing them to order their spin-spatial state. This SOC-inducing superradiant Dicke phase transition results in a spinor-helix polariton condensate. We observe emergent SOC through spin-resolved atomic momentum imaging. Dynamical SOC in quantum gas cavity QED, and the extension to dynamical gauge fields, may enable the creation of Meissner-like effects, topological superfluids, and exotic quantum Hall states in coupled light-matter systems.

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confidence: 57%

Dynamical Spin-Orbit Coupling of a Quantum Gas

2019

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“…1(b)]. The superradiant QPT (a second-order phase transition) was proposed in the single Dicke model and occurs when increasing the atom-field coupling through a critical point [39][40][41][42][43][44][45][46][47][48][49][50][51], which is associated with a spontaneously Z 2 symmetry breaking. Extending to the periodic lattice, however, here we find that this critical point is replaced by the critical curves periodically modulated by wave number k. The periodical boundaries of normal and superradiant phases intersect at some certain values of k. This predicts, in the lattice systems, a critical region between the normal and superradiant phases, where the first-order phase transition and unstable phases alternatively appear in the different range of k.…”

Section: Introductionmentioning

confidence: 99%

Interplay of quantum phase transition and flat band in hybrid lattices

Zhu

Ramezani

Emary

et al. 2020

Phys. Rev. Research

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We establish a connection between quantum phase transitions (QPTs) and energy band theory in an extended Dicke-Hubbard lattice, where the periodical critical curves modulated by wave number k leads to rich equilibrium dynamics. Interestingly, the chiral-symmetry-protected flat band and the localization that it engenders exclusively occurs in the normal phase and disappears in the superradiant phase. This originates from the QPT induced simultaneous breaking up of the on-site resonance condition and off-site chiral symmetry of the system, which prohibits the destructive interference for obtaining a flat band. Our work offers an approach to identify different phases of the lattice via detecting the flat bands or simply the related localizations in a single cell, and, in turn, to control the appearance of flat bands by QPT.

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“…Nowadays, STIRAP has applications in many fields [21], such as the formation of ultracold molecules [21], the creation of gates for quantum information in different schemes [21], the control of nitrogen vacancy centers and semiconductor quantum dots [21], and the quantum optical analogues that are used in waveguide optics [21] and frequency conversion [21]. The two photon JC model has also been used to study the effects of the spin orbital coupling [22,23] of ultracold atoms located in the ring optical cavity. Such atoms play the role of pseudo-spins.…”

Section: Introductionmentioning

confidence: 99%

Comparison between XY Spin Chains with Spin 1/2 or 1 Interacting with Quantized Electromagnetic Field by One and Two Photon Jaynes-Cummings Model

Tonchev

2020

Magnetochemistry

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This paper describes two cases of interaction between a quantized electromagnetic field and two different XY spin molecules; one with spins ½, and the other with spins 1. Both interact with a quantized electromagnetic field, with one of the spins in the chain interacting with the electromagnetic field. The interaction between the field mode and the spin chain with spins 1 is described by the one- and two-photon Jaynes-Cummings model (JC model). On the other hand, the interaction between the spins ½ and the electromagnetic field is described only by the one-photon Jaynes-Cummings model. Analytical and numerical calculations were made for the case of a different number of photons in the field mode, a different number of spins, and a different position of spin, interacting with the electromagnetic field. The invariant and block structures of such a chain are shown with a comparison made between the evolution of the magnetic moment and the number of photons in both cases.

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Effects of spin-orbit coupling on Jaynes-Cummings and Tavis-Cummings models

Cited by 28 publications

References 64 publications

Dynamical Spin-Orbit Coupling of a Quantum Gas

Dynamical Spin-Orbit Coupling of a Quantum Gas

Interplay of quantum phase transition and flat band in hybrid lattices

Comparison between XY Spin Chains with Spin 1/2 or 1 Interacting with Quantized Electromagnetic Field by One and Two Photon Jaynes-Cummings Model

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