Browsing MIT Open Access Articles by Title
Now showing items 40576-40595 of 55948
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Quantum Unique Ergodicity for Cayley Graphs of Quasirandom Groups
(Springer Berlin Heidelberg, 2023-07-31)Abstract A finite group G is called C-quasirandom (by Gowers) if all non-trivial irreducible complex representations of G have dimension at least C. For any unit ... -
A Quantum Version of Schoening's Algorithm Applied to Quantum 2-Sat
(Rinton Press, 2016-10)We study a quantum algorithm that consists of a simple quantum Markov process, and we analyze its behavior on restricted versions of Quantum 2-SAT. We prove that the algorithm solves this decision problem with high probability ... -
The Quantum Wasserstein Distance of Order 1
(Institute of Electrical and Electronics Engineers (IEEE), 2021) -
Quantum Zeno effect in the strong measurement regime of circuit quantum electrodynamics
(IOP Publishing, 2016-05)We observe the quantum Zeno effect—where the act of measurement slows the rate of quantum state transitions—in a superconducting qubit using linear circuit quantum electrodynamics readout and a near-quantum-limited following ... -
Quantum-coherent nanoscience
(Springer Science and Business Media LLC, 2021)For the past three decades, nanoscience has widely affected many areas in physics, chemistry, and engineering, and has led to numerous fundamental discoveries as well as applications and products. Concurrently, quantum ... -
Quantum-coupled single-electron thermal to electric conversion scheme
(American Institute of Physics (AIP), 2009-11)Thermal to electric energy conversion with thermophotovoltaics relies on radiation emitted by a hot body, which limits the power per unit area to that of a blackbody. Microgap thermophotovoltaics take advantage of evanescent ... -
Quantum-Enhanced Advanced LIGO Detectors in the Era of Gravitational-Wave Astronomy
(American Physical Society (APS), 2019)© 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International ... -
Quantum-Enhanced Advanced LIGO Detectors in the Era of Gravitational-Wave Astronomy
(American Physical Society (APS), 2019-12)© 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International ... -
Quantum-enhanced ladar ranging with squeezed-vacuum injection, phase-sensitive amplification, and slow photodetectors
(SPIE, 2011-09)Theory has shown [1] that the quantum enhancements afforded by squeezed-vacuum injection (SVI) and phasesensitive amplification (PSA) can improve the spatial resolution of a soft-aperture, homodyne-detection laserradar ... -
Quantum-Gas Microscope for Fermionic Atoms
(American Physical Society, 2015-05)We realize a quantum-gas microscope for fermionic ⁴⁰K atoms trapped in an optical lattice, which allows one to probe strongly correlated fermions at the single-atom level. We combine 3D Raman sideband cooling with ... -
Quantum-inspired algorithms for solving low-rank linear equation systems with logarithmic dependence on the dimension
(2020-12-01)We present two efficient classical analogues of the quantum matrix inversion algorithm [16] for low-rank matrices. Inspired by recent work of Tang [27], assuming length-square sampling access to input data, we implement ... -
Quantum-inspired algorithms in practice
(Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften, 2020)© The Author(s), 2020. We study the practical performance of quantum-inspired algorithms for recommendation systems and linear systems of equations. These algorithms were shown to have an exponential asymptotic speedup ... -
Quantum-Locked Key Distribution at Nearly the Classical Capacity Rate
(American Physical Society, 2014-10)Quantum data locking is a protocol that allows for a small secret key to (un)lock an exponentially larger amount of information, hence yielding the strongest violation of the classical one-time pad encryption in the quantum ... -
Quantum-Merlin-Arthur-complete problems for stoquastic Hamiltonians and Markov matrices
(American Physical Society, 2010-03)We show that finding the lowest eigenvalue of a 3-local symmetric stochastic matrix is Quantum-Merlin-Arthur-complete (QMA-complete). We also show that finding the highest energy of a stoquastic Hamiltonian is QMA-complete ... -
Quantum-Spillover-Enhanced Surface-Plasmonic Absorption at the Interface of Silver and High-Index Dielectrics
(American Physical Society, 2015-11)We demonstrate an unexpectedly strong surface-plasmonic absorption at the interface of silver and high-index dielectrics based on electron and photon spectroscopy. The measured bandwidth and intensity of absorption deviate ... -
QuantumNAT: Quantum Noise-Aware Training with Noise Injection, Quantization and Normalization
(ACM|Proceedings of the 59th ACM/IEEE Design Automation Conference, 2022-07-10) -
The quark beam function at NNLL
(Springer / SISSA, 2010-09)In hard collisions at a hadron collider the most appropriate description of the initial state depends on what is measured in the final state. Parton distribution functions (PDFs) evolved to the hard collision scale Q are ... -
Quark fragmentation within an identified jet
(American Physical Society, 2010-04)We derive a factorization theorem that describes an energetic hadron h fragmenting from a jet produced by a parton i, where the jet invariant mass is measured. The analysis yields a “fragmenting jet function” Gih(s,z) that ... -
Quark masses: An environmental impact statement
(American Physical Society, 2009-03)We investigate worlds that lie on a slice through the parameter space of the standard model over which quark masses vary. We allow as many as three quarks to participate in nuclei, while fixing the mass of the electron and ... -
Quarkonium at nonzero isospin density
(American Physical Society, 2013-05)We calculate the energies of quarkonium bound states in the presence of a medium of nonzero isospin density using lattice QCD. The medium, created using a canonical (fixed isospin charge) approach, induces a reduction of ...
