Discrete translational invariance and an equidistant energy spectrum are necessary and sufficient for perfect chiral circulation in N-site quantum rings, from which a closed-form Hamiltonian follows.
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Multimode strong coupling in circuit QED lattices produces emergent band gaps, lifted degeneracies, and a four-wave mixing process dominated by localized flat-band modes.
A SQUID-array Josephson parametric amplifier achieves near-quantum-limited 20 dB gain over ~50 MHz bandwidth, with its complex gain spectra analytically reproduced by adding Fabry-Pérot interference to a quantum input-output model.
Microscopic unitary simulation of circuit QED readout shows qubit T1 drops with increasing drive amplitude when a Purcell notch filter is at the qubit frequency, exposing qualitative defects in Lindblad master equations.
A dual-function TED circuit emits and detects single microwave photons with 60% observed efficiency and 95% inferred detection efficiency using a double transmon coupler.
A parity-violating Kerr parametric oscillator exhibits doubly-degenerate levels via antiunitary symmetry, showing spontaneous symmetry breaking is possible without parity protection.
In the open coupled-top Dicke model, photon loss induces spontaneous synchronization and two distinct dissipative quantum scars, one protected with persistent revivals and one showing slow decay linked to chaos-assisted tunneling for small spins.
A driven two-level system generates distributable entanglement via Mollow sidebands, but near-maximal remote entanglement stabilization requires added filter cavities and optimized driving parameters explained by an effective two-mode squeezing model.
Graphene Josephson junctions exhibit gate-, temperature-, and bias-tunable Kerr nonlinearity with coefficients ranging from 300 kHz to 1.2 MHz.
citing papers explorer
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Chiral Quantum Transport with Perfect Circulation: From Floquet Engineering toAnyonic Dynamics
Discrete translational invariance and an equidistant energy spectrum are necessary and sufficient for perfect chiral circulation in N-site quantum rings, from which a closed-form Hamiltonian follows.
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Multimode Strong-Coupling Processes in Circuit QED Lattices
Multimode strong coupling in circuit QED lattices produces emergent band gaps, lifted degeneracies, and a four-wave mixing process dominated by localized flat-band modes.
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High-gain and large-bandwidth Josephson parametric amplifier influenced by Fabry-P\'erot interference
A SQUID-array Josephson parametric amplifier achieves near-quantum-limited 20 dB gain over ~50 MHz bandwidth, with its complex gain spectra analytically reproduced by adding Fabry-Pérot interference to a quantum input-output model.
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First-principles study of dispersive readout in circuit QED
Microscopic unitary simulation of circuit QED readout shows qubit T1 drops with increasing drive amplitude when a Purcell notch filter is at the qubit frequency, exposing qualitative defects in Lindblad master equations.
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Transmon Architecture for Emission and Detection of Single Microwave Photons
A dual-function TED circuit emits and detects single microwave photons with 60% observed efficiency and 95% inferred detection efficiency using a double transmon coupler.
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Degeneracy beyond the parity-symmetry protection in one-dimensional spinless models: The parity-violating Kerr parametric oscillator
A parity-violating Kerr parametric oscillator exhibits doubly-degenerate levels via antiunitary symmetry, showing spontaneous symmetry breaking is possible without parity protection.
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Chaos to Synchronization and Dissipative Quantum Scarring in Open Coupled top-Dicke model in a Lossy Cavity
In the open coupled-top Dicke model, photon loss induces spontaneous synchronization and two distinct dissipative quantum scars, one protected with persistent revivals and one showing slow decay linked to chaos-assisted tunneling for small spins.
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Driven two-level systems as a minimal resource for remote entanglement stabilization
A driven two-level system generates distributable entanglement via Mollow sidebands, but near-maximal remote entanglement stabilization requires added filter cavities and optimized driving parameters explained by an effective two-mode squeezing model.
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Probing tunable Kerr nonlinearity in graphene Josephson junctions
Graphene Josephson junctions exhibit gate-, temperature-, and bias-tunable Kerr nonlinearity with coefficients ranging from 300 kHz to 1.2 MHz.
- Dissipation-assisted preparation of Floquet-Laughlin states in superconducting circuits