Publications associées à Criticality-Enhanced Quantum Sensing with a Parametric Superconducting Resonator

Publications associées (17)

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

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 ...

EPFL2025

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

Christophe Marcel Georges Galland, Sachin Suresh Verlekar

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 ...

2025

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

Christopher Marc Mudry

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 ...

AMER PHYSICAL SOC2025

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

Edoardo Charbon, Andrea Ruffino, Jad Benserhir

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 ...

2025

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

Nikita Doikov

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 ...

SPRINGER/PLENUM PUBLISHERS2025

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

Matteo Galli, Marco Clementi

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 ...

Aip Publishing2024

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

Johann Nicolaï Stachurski

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 ...

EPFL2024

Benchmarking quantum computer simulation software packages: State vector simulators

Andreas Martin Läuchli Herzig

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 ...

SCIPOST FOUNDATION2024

Variational benchmarks for quantum many-body problems

Giuseppe Carleo, Andreas Martin Läuchli Herzig, Jannes Willy E. Nys, Filippo Vicentini, Riccardo Rossi, Dian Wu, Imelda Romero

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 ...

American Association for the Advancement of Science2024

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

Bruce Normand

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 ...

2024

Quantum collective motion of macroscopic mechanical oscillators

Evgenii Guzovskii, Tobias Kippenberg, Marco Scigliuzzo, Amir Youssefi, Mahdi Chegnizadeh, Shingo Kono

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 ...

American Association for the Advancement of Science2024

Cavity-magnon-polariton spectroscopy of strongly hybridized electro-nuclear spin excitations in LiHoF4

Henrik Moodysson Rønnow, Ivica Zivkovic, Richard Gaal, Peter Babkevich

We first present a formalism that incorporates the input-output formalism and the linear response theory to employ cavity-magnon-polariton coupling as a spectroscopic tool for investigating strongly hybridized electro-nuclear spin excitations. A microscopi ...

Nature Research2024

Dynamical simulation via quantum machine learning with provable generalization

Zoë Holmes

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 ...

Amer Physical Soc2024

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

Tobias Kippenberg, Camille Sophie Brès, Junqiu Liu, Marco Clementi, Boris Zabelich, Samantha Sbarra

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 ...

SPIE2024

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

Samuel Louis Nyckees

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 ...

EPFL2024

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

Laurane Chloé Angélina Marco

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 ...

Springer Cham2024

Nonlinear Economic State Equilibria via van der Waals Modeling

Max-Olivier Hongler

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 ...

2024