Criticality-Enhanced Quantum Sensing with a Parametric Superconducting Resonator

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The faithful bidirectional quantum coherent conversion of microwave (5 GHz) and optical (193.5 THz) quantum states will become essential for future quantum networks. Due to their low transition frequency, qubit states are quickly destroyed at room temperat ...

Controlling the light emitted by individual molecules is instrumental to a number of advanced nanotechnologies ranging from super-resolution bioimaging and molecular sensing to quantum nanophotonics. Molecular emission can be tailored by modifying the loca ...

The anisotropic quantum spin- 1 2 XY model on a linear chain was solved by Lieb, Schultz, and Mattis [Ann. Phys. 16, 407 (1961)] and shown to display a continuous quantum phase transition at the O(2) symmetric point separating two gapped phases with compet ...

This article presents a cryogenic mode-switching class-F voltage-controlled oscillator (VCO) aimed at addressing the demand for wideband, low phase noise (PN) local oscillator signals in cryo-CMOS quantum controllers. First, to resolve the issues of manual ...

In this work, we develop first-order (Hessian-free) and zeroth-order (derivative-free) implementations of the Cubically Regularized Newton Method for solving general non-convex optimization problems. For that, we employ finite difference approximations of ...

Integrated quantum photonics leverages the on-chip generation of nonclassical states of light to realize key functionalities of quantum devices. Typically, the generation of such nonclassical states relies on whispering gallery mode resonators, such as int ...

Over the past decade, quantum photonics platforms aiming at harnessing the fundamental properties of single particles, such as quantum superposition and quantum entanglement, have flourished. In this context, single-photon emitters capable of operating at ...

Rapid advances in quantum computing technology lead to an increasing need for software simulators that enable both algorithm design and the validation of results obtained from quantum hardware. This includes calculations that aim at probing regimes of quan ...

The continued development of computational approaches to many-body ground-state problems in physics and chemistry calls for a consistent way to assess its overall progress. In this work, we introduce a metric of variational accuracy, the V-score, obtained ...

Low-dimensional quantum magnets are a versatile materials platform for studying the emergent many-body physics and collective excitations that can arise even in systems with only short-range interactions. Understanding their low-temperature structure and s ...

Collective phenomena arise from interactions within complex systems, leading to behaviors absent in individual components. Observing quantum collective phenomena with macroscopic mechanical oscillators has been impeded by the stringent requirement that osc ...

Much attention has been paid to dynamical simulation and quantum machine learning (QML) independently as applications for quantum advantage, while the possibility of using QML to enhance dynamical simulations has not been thoroughly investigated. Here we d ...

On-chip coherent light generation has wide-ranging applications in metrology, spectroscopy, quantum optics, etc. In this study, we demonstrate the generation of coherent light from a silicon-nitride microring resonator using cascaded nonlinear processes. T ...

We investigate and characterise phase transitions driven by thermal fluctuations out of ordered phases into disordered ones on a series of two-dimensional models. We rely on tensor networks algorithms that approximate directly the partition function in the ...

The Tensor Isomorphism Problem (TIP) has been shown equivalent to the matrix code equivalence problem, making it an interesting candidate on which to build post-quantum cryptographic primitives. These hard problems have already been used in protocol develo ...

The renowned van der Waals (VDW) state equation quantifies the equilibrium relationship between the pressure P, volume V, and temperature (Formula presented.) of a real gas. We assign new variable interpretations adapted to the economic context: (Formula p ...

Criticality-Enhanced Quantum Sensing with a Parametric Superconducting Resonator

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Towards microwave-to-optical quantum transduction with barium titanate/strontium titanate integrated photonics

Giant Purcell Broadening and Lamb Shift for DNA-Assembled Near-Infrared Quantum Emitters

Deconfined classical criticality in the anisotropic quantum spin-1 2 XY model on the square lattice

A Cryo-CMOS Wideband Mode-Switching Class-F VCO With Harmonic-Resonance Self-Alignment

First and Zeroth-Order Implementations of the Regularized Newton Method with Lazy Approximated Hessians

Generation of entangled photon pairs from a silicon bichromatic photonic crystal cavity

Investigation of room-temperature single-photon emitters in GaN-based materials and GaN/AlN quantum dots

Benchmarking quantum computer simulation software packages: State vector simulators

Variational benchmarks for quantum many-body problems

(C5 H9NH3)2CuBr4: A metal-organic two-ladder quantum magnet

Quantum collective motion of macroscopic mechanical oscillators

Dynamical simulation via quantum machine learning with provable generalization

UV, visible and near-infrared light generation through cascaded nonlinear processes in silicon-nitride microring resonators pumped at telecom wavelength

Thermal melting in 2D classical and quantum systems: a tensor network study

Solving the Tensor Isomorphism Problem for Special Orbits with Low Rank Points: Cryptanalysis and Repair of an Asiacrypt 2023 Commitment Scheme

Nonlinear Economic State Equilibria via van der Waals Modeling