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Recent articles in Physical Review Letters

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Augmenting the Sensing Performance of Entangled Photon Pairs through Asymmetry

Author(s): Yoad Michael, Isaac Jonas, Leon Bello, Mallachi-Ellia Meller, Eliahu Cohen, Michael Rosenbluh, and Avi Pe’erWe analyze theoretically and experimentally cases of asymmetric detection, stimulation, and loss within a quantum nonlinear interferometer of entangled pairs. We show that the visibility of the SU(1,1) interference directly discerns...

Advancement of Photospheric Radius Expansion and Clocked Type-I X-Ray Burst Models with the New $^{22}\mathrm{Mg}(α,p)^{25}\mathrm{Al}$ Reaction Rate Determined at the Gamow Energy

Author(s): J. Hu (胡钧) et al.We report the first (in)elastic scattering measurement of Al25+p with the capability to select and measure in a broad energy range the proton resonances in Si26 contributing to the Mg22(α,p) reaction at type I x-ray burst energies. We measured spin-parities of four resonances above the α threshold o...[Phys. Rev. Lett. 127,...

Measurement of the Absolute Branching Fraction of ${D}_{s}^{+}→{τ}^{+}{ν}_{τ}$ via ${τ}^{+}→{e}^{+}{ν}_{e}{\overline{ν}}_{τ}$

Author(s): M. Ablikim et al. (BESIII Collaboration)Using a dataset of 6.32  fb−1 of e+e− annihilation data collected with the BESIII detector at center-of-mass energies between 4178 and 4226 MeV, we have measured the absolute branching fraction of the leptonic decay Ds+→τ+ντ via τ+→e+νeν¯τ, and find BDs+→τ+ντ=(5.27±0.10±0.12)×10−2, where the first u...[Phys....

Structure of High-Pressure Supercooled and Glassy Water

Author(s): Riccardo Foffi and Francesco SciortinoWe numerically investigate the structure of deep supercooled and glassy water under pressure, covering the range of densities corresponding to the experimentally produced high- and very-high-density amorphous phases. At T=188  K, a continuous increase in density is observed on varying pressure from ...[Phys....

Spectral Statistics of Non-Hermitian Matrices and Dissipative Quantum Chaos

Author(s): Jiachen Li, Tomaž Prosen, and Amos ChanWe propose a measure, which we call the dissipative spectral form factor (DSFF), to characterize the spectral statistics of non-Hermitian (and nonunitary) matrices. We show that DSFF successfully diagnoses dissipative quantum chaos and reveals correlations between real and imaginary parts of the com...[Phys....

Mechanism and Prediction of Hydrogen Embrittlement in fcc Stainless Steels and High Entropy Alloys

Author(s): Xiao Zhou, Ali Tehranchi, and William A. CurtinThe urgent need for clean energy coupled with the exceptional promise of hydrogen (H) as a clean fuel is driving development of new metals resistant to hydrogen embrittlement. Experiments on new fcc high entropy alloys present a paradox: these alloys absorb more H than Ni or SS304 (austenitic...

Nature of Unconventional Pairing in the Kagome Superconductors $A{\mathrm{V}}_{3}{\mathrm{Sb}}_{5}$ ($A=\mathrm{K},\mathrm{Rb},\mathrm{Cs}$)

Author(s): Xianxin Wu, Tilman Schwemmer, Tobias Müller, Armando Consiglio, Giorgio Sangiovanni, Domenico Di Sante, Yasir Iqbal, Werner Hanke, Andreas P. Schnyder, M. Michael Denner, Mark H. Fischer, Titus Neupert, and Ronny ThomaleThe recent discovery of AV3Sb5 (A=K,Rb,Cs) has uncovered an intriguing arena for exotic Fermi surface instabilities in a...

Intermediate-Range Casimir-Polder Interaction Probed by High-Order Slow Atom Diffraction

Author(s): C. Garcion, N. Fabre, H. Bricha, F. Perales, S. Scheel, M. Ducloy, and G. DutierA new technique in which atoms move slowly through a diffraction grating lets researchers measure the tiny Casimir-Polder interaction, a force that arises from quantum vacuum fluctuations.[Phys. Rev. Lett. 127, 170402] Published Tue Oct 19, 2021

Filter Functions for Quantum Processes under Correlated Noise

Author(s): Pascal Cerfontaine, Tobias Hangleiter, and Hendrik BluhmMany qubit implementations are afflicted by correlated noise not captured by standard theoretical tools that are based on Markov approximations. While independent gate operations are a key concept for quantum computing, it is actually not possible to fully describe noisy gates locally...

Weak-Measurement-Induced Asymmetric Dephasing: Manifestation of Intrinsic Measurement Chirality

Author(s): Kyrylo Snizhko, Parveen Kumar, Nihal Rao, and Yuval GefenGeometrical dephasing is distinct from dynamical dephasing in that it depends on the trajectory traversed, hence it reverses its sign upon flipping the direction in which the path is traced. Here we study sequences of generalized (weak) measurements that steer a system in a closed trajectory....

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