QSCOUT's Qubit-Boson Gate Set

The Quantum Scientific Computing Open User Testbed (QSCOUT) has developed a qubit-boson gate set for hybrid continuous-discrete variable (CV-DV) quant...

arXiv Quantum Physics

Quantum-Optical Bound States in the Continuum

Bound states in the continuum (BICs) are counterintuitive localized states that lie within the continuum of extended states. While extensively realize...

arXiv Quantum Physics

Idling error suppression through gate scheduling

Achieving high-precision quantum computation requires effective suppression of idling errors that occur when qubits remain inactive during waiting per...

arXiv Quantum Physics

Quantum sensing of aging transitions

The aging transition is a critical phenomenon in which collective dynamics deteriorate as the fraction of inactive quantum nodes exceeds a threshold, ...

arXiv Quantum Physics

Three-qubit nonlocality paradoxes: beyond GHZ

Quantum nonlocality paradoxes, such as that of GHZ, provide maximally sharp logical obstructions to classical probabilistic models of quantum correlat...

arXiv Quantum Physics

Quantum machine learning models for graphs

Geometric Machine Learning (GML) successes have been achieved through the thorough study and design of new equivariant neural networks. In comparison,...

arXiv Quantum Physics

Spectral Multipartite Entanglement

We introduce a unified, computable measure of multipartite entanglement based on the spectral properties of an entanglement graph and its associated e...

arXiv Quantum Physics

Ferroelectric transmon

Superconducting qubits are a leading platform for quantum computing. However, simultaneously achieving low noise sensitivity to suppress decoherence a...

arXiv Quantum Physics

Untangling QLDPC Codes with Biased Noise Ancilla

Remarkable technical progress has made high-rate, high-distance, quantum low-density parity-check codes (QLDPC) promising candidates for scalable quan...

arXiv Quantum Physics

Programmable generation of flying cat-qubits

We propose a framework for the direct generation of flying cat-qubit states from vacuum using time-dependent two-photon drives in nonlinear bosonic sy...

arXiv Quantum Physics

Deterministic nonlinear bunching of bosons

The ability of bosonic energy quanta to bunch together in an energy-conserving interaction is a fundamental feature of quantum harmonic oscillators. L...

arXiv Quantum Physics

Self-Sifting quantum key distribution

In this paper, we introduce a novel two-way quantum key distribution (QKD) protocol in which the sender (Alice) and receiver (Bob) employ one qubit of...

arXiv Quantum Physics

Algebraic structures of the Lindblad equation

We investigate the algebraic structure underlying the Lindblad equation for finite-dimensional open quantum systems. By introducing a suitable operato...

arXiv Quantum Physics

How rare are Markovian quantum dynamics?

A profound understanding of decoherence and dissipation in quantum dynamics is crucial for the realistic modeling of the evolution of quantum systems....

arXiv Quantum Physics

A quantum algorithm for one-shot signatures

We provide a pre-obfuscation circuit-level implementation of an efficient one shot signature scheme, which has known applications to delegated signatu...

arXiv Quantum Physics

How Many Qubits Does a Quantum Computer Need?

Guest post by Zeynep Koruturk, Dr. Kris Naudts, & Donald Harmitt of Firgun Ventures and Professor Bob Coecke of Relational Intelligence Limited Few qu...

Quantum Computing Report

New class of magnons live a hundred times longer

Discovery could help in the development of on-chip quantum information technologies that can be scaled down to the nanoscale The post New class of mag...

Physics World - Quantum

Near-Optimal Learning of Local Lindbladians

We study the problem of learning local Lindbladians from black-box access to the physical evolution, and the goal is to estimate all Hamiltonian and d...

arXiv Quantum Physics