Gaussian repeater chains using only Gaussian operations and homodyne detection cannot beat direct transmission for the quantum capacity of pure-loss bosonic channels.
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A hybrid CV-DV quantum error correction scheme uses discrete-variable ancillas to correct continuous-variable displacement errors and forms new oscillator-in-oscillator codes without GKP states.
The inverse-squeezing Kennedy receiver converts transmitter-side squeezing into enhanced photon-number contrast, surpassing the standard quantum limit for squeezed-state BPSK near mean photon number N=0.3 and the coherent-state Helstrom bound near N=0.4.
An automated design algorithm optimizes photonic experiment topologies and source parameters to achieve higher-probability entanglement generation for Bell, W, and NOON states while accounting for multi-pair emissions.
Nonadiabatic modulation near a quantum critical point strongly boosts photon emission from vacuum fluctuations, enhancing flux and non-classical properties even against thermal noise.
A quartic extension of the twisting-and-turning Hamiltonian generates new unstable fixed points that accelerate short-time amplification of quantum fluctuations, yielding enhanced sensitivity within accessible coherence times.
The concatenated dual displacement code suppresses Gaussian displacement error variance by up to 50% under infinite squeezing while correcting lattice-crossing events in CV quantum error correction.
Introduces non-Gaussian control parameters (s0, δ0) and an optimization method that reduces photon detections by a factor of three and increases preparation probability by nearly 10^8 for GKP states, with gains shown across cat, cubic phase, and random states.
Zero Fourier modes in circular photonic waveguide networks create a protected subspace that enables perfect state transfer to the diametrically opposite site when the number of sites N equals 4n.
In a Holstein-Tavis-Cummings model, disorder induces robust non-Gaussian vibrational states in large ensembles that semiclassical approximations fail to capture.
Language generation requires dissipative quantum dynamics with non-local aggregation, not conservation laws, framing it as dissipative quantum field theory.
Proposes an all-optical feedforward scheme for arbitrary linear operations via generalized quantum teleportation that suppresses hardware noise and supports high-speed optical quantum computing.
Convex optimization formulations and an analytical symplectic trace expression are introduced to reconstruct physical Gaussian covariance matrices and witness genuine multipartite entanglement from experimental data.
citing papers explorer
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No-Go Theorem for Gaussian Quantum Repeaters from Fractional Extendibility
Gaussian repeater chains using only Gaussian operations and homodyne detection cannot beat direct transmission for the quantum capacity of pure-loss bosonic channels.
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Discrete-variable assisted error correction of continuous-variable quantum information
A hybrid CV-DV quantum error correction scheme uses discrete-variable ancillas to correct continuous-variable displacement errors and forms new oscillator-in-oscillator codes without GKP states.
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Near-optimal discrimination of displaced squeezed binary signals using displacement, inverse-squeezing, and photon-number-resolving detection
The inverse-squeezing Kennedy receiver converts transmitter-side squeezing into enhanced photon-number contrast, surpassing the standard quantum limit for squeezed-state BPSK near mean photon number N=0.3 and the coherent-state Helstrom bound near N=0.4.
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Automated experimental design for high-probability entanglement generation
An automated design algorithm optimizes photonic experiment topologies and source parameters to achieve higher-probability entanglement generation for Bell, W, and NOON states while accounting for multi-pair emissions.
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Quantum Vacuum Radiation Near a Critical Point
Nonadiabatic modulation near a quantum critical point strongly boosts photon emission from vacuum fluctuations, enhancing flux and non-classical properties even against thermal noise.
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Instability-Enhanced Quantum Sensing with Tunable Multibody Interactions
A quartic extension of the twisting-and-turning Hamiltonian generates new unstable fixed points that accelerate short-time amplification of quantum fluctuations, yielding enhanced sensitivity within accessible coherence times.
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A Concatenated Dual Displacement Code for Continuous-Variable Quantum Error Correction
The concatenated dual displacement code suppresses Gaussian displacement error variance by up to 50% under infinite squeezing while correcting lattice-crossing events in CV quantum error correction.
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Beyond Stellar Rank: Control Parameters for Scalable Optical Non-Gaussian State Generation
Introduces non-Gaussian control parameters (s0, δ0) and an optimization method that reduces photon detections by a factor of three and increases preparation probability by nearly 10^8 for GKP states, with gains shown across cat, cubic phase, and random states.
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Perfect state transfer in quantum photonic networks based on Fourier modes
Zero Fourier modes in circular photonic waveguide networks create a protected subspace that enables perfect state transfer to the diametrically opposite site when the number of sites N equals 4n.
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Disorder-induced non-Gaussian states in large ensembles of cavity-coupled molecules
In a Holstein-Tavis-Cummings model, disorder induces robust non-Gaussian vibrational states in large ensembles that semiclassical approximations fail to capture.
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Path Integral Solution for Dissipative Generative Dynamics
Language generation requires dissipative quantum dynamics with non-local aggregation, not conservation laws, framing it as dissipative quantum field theory.
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All-optical Implementation of Generalized Quantum Teleportation
Proposes an all-optical feedforward scheme for arbitrary linear operations via generalized quantum teleportation that suppresses hardware noise and supports high-speed optical quantum computing.
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Revisiting Gaussian genuine entanglement witnesses with modern software
Convex optimization formulations and an analytical symplectic trace expression are introduced to reconstruct physical Gaussian covariance matrices and witness genuine multipartite entanglement from experimental data.