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Operational Interpretation of Weight-Based Resource Quantifiers in Convex Quantum Resource Theories.

Andrés F Ducuara, Paul Skrzypczyk,

We introduce the resource quantifier of weight of resource for convex quantum resource theories of states and measurements with arbitrary resources. We show that it captures the advantage that a resourceful state (measurement) offers over all possible free states (measurements) in the operational task of exclusion of subchannels (states). Furthermore, ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(11):110401]

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Species Separation and Hydrogen Streaming upon Shock Release from Polystyrene under Inertial Confinement Fusion Conditions.

Shuai Zhang, S X Hu,

Shock release from inertial confinement fusion (ICF) shells poses a great challenge to single-fluid hydrodynamic equations, especially for describing materials composed of different ion species. This has been evidenced by a recent experiment [Haberberger et al., Phys. Rev. Lett. 123, 235001 (2019)PRLTAO0031-900710.1103/PhysRevLett.123.235001], in which low-density plasmas (10^{19} to 10^{20}  cm^{-3}) are measured ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(10):105001]

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Coexistence of Surface Ferromagnetism and a Gapless Topological State in MnBi_{2}Te_{4}.

D Nevola, H X Li, J-Q Yan, R G Moore, H-N Lee, H Miao, P D Johnson,

Surface magnetism and its correlation with the electronic structure are critical to understanding the topological surface state in the intrinsic magnetic topological insulator MnBi_{2}Te_{4}. Here, using static and time resolved angle-resolved photoemission spectroscopy (ARPES), we find a significant ARPES intensity change together with a gap opening on a Rashba-like conduction ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(11):117205]

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Ab Initio Calculations of Low-Energy Nuclear Scattering Using Confining Potential Traps.

Xilin Zhang, S R Stroberg, P Navrátil, Chan Gwak, J A Melendez, R J Furnstahl, J D Holt,

A recently modified method to enable low-energy nuclear scattering results to be extracted from the discrete energy levels of the target-projectile clusters confined by harmonic potential traps is tested. We report encouraging results for neutron-α and neutron-^{24}O elastic scattering from analyzing the trapped levels computed using two different ab initio nuclear structure ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(11):112503]

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Surfactant-Mediated Epitaxial Growth of Single-Layer Graphene in an Unconventional Orientation on SiC.

F C Bocquet, Y-R Lin, M Franke, N Samiseresht, S Parhizkar, S Soubatch, T-L Lee, C Kumpf, F S Tautz,

We report the use of a surfactant molecule during the epitaxy of graphene on SiC(0001) that leads to the growth in an unconventional orientation, namely R0° rotation with respect to the SiC lattice. It yields a very high-quality single-layer graphene with a uniform orientation with respect to the substrate, on ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(10):106102]

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Steady and Unsteady Buckling of Viscous Capillary Jets and Liquid Bridges.

Jingxuan Tian, Neil M Ribe, Xiaoxiao Wu, Ho Cheung Shum,

Steady buckling (coiling) of thin falling liquid jets is sensitive to surface tension, yet an understanding of these capillary effects lags far behind what is known about surface-tension-free coiling. In experiments with submillimetric jets and ultralow flow rates, we find that the critical dispensing height H_{c} for coiling decreases with ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(10):104502]

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Effects of the Transverse Instability and Wave Breaking on the Laser-Driven Thin Foil Acceleration.

Y Wan, I A Andriyash, W Lu, W B Mori, V Malka,

Acceleration of ultrathin foils by the laser radiation pressure promises a compact alternative to the conventional ion sources. Among the challenges on the way to practical realization, one fundamental is a strong transverse plasma instability, which develops density perturbations and breaks the acceleration. In this Letter, we develop a theoretical ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(10):104801]

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Fermionic State Discrimination by Local Operations and Classical Communication.

Matteo Lugli, Paolo Perinotti, Alessandro Tosini,

We consider the problem of local operations and classical communication (LOCC) discrimination between two bipartite pure states of fermionic systems. We show that, contrary to the case of quantum systems, for fermionic systems it is generally not possible to achieve the ideal state discrimination performances through LOCC measurements. On the ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(11):110403]

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Spherically Symmetric Scalar Hair for Charged Black Holes.

Jeong-Pyong Hong, Motoo Suzuki, Masaki Yamada,

The no-hair theorem by Mayo and Bekenstein states that there exists no nonextremal static and spherical charged black hole endowed with hair in the form of a charged scalar field with a self-interaction potential. In our recent work [Phys. Lett. B 803, 135324 (2020)PYLBAJ0370-2693], we showed that the effect of ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(11):111104]

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All Quantum Resources Provide an Advantage in Exclusion Tasks.

Roope Uola, Tom Bullock, Tristan Kraft, Juha-Pekka Pellonpää, Nicolas Brunner,

A key ingredient in quantum resource theories is a notion of measure. Such as a measure should have a number of fundamental properties, and desirably also a clear operational meaning. Here we show that a natural measure known as the convex weight, which quantifies the resource cost of a quantum ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(11):110402]

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Programming Impulsive Deformation with Mechanical Metamaterials.

Xudong Liang, Alfred J Crosby,

Impulsive deformation is widely observed in biological systems to generate movement with high acceleration and velocity. By storing elastic energy in a quasistatic loading and releasing it through an impulsive elastic recoil, organisms circumvent the intrinsic trade-off between force and velocity and achieve power amplified motion. However, such asymmetry in ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(10):108002]

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Anharmonicity and Universal Response of Linear Carbon Chain Mechanical Properties under Hydrostatic Pressure.

Keshav Sharma, Nathalia L Costa, Yoong Ahm Kim, Hiroyuki Muramatsu, Newton M Barbosa Neto, Luiz G P Martins, Jing Kong, Alexandre Rocha Paschoal, Paulo T Araujo,

Isolated linear carbon chains (LCCs) encapsulated by multiwalled carbon nanotubes are studied under hydrostatic pressure (P) via resonance Raman scattering. The LCCs' spectroscopic signature C band around 1850  cm^{-1} softens linearly with increasing P. A simple anharmonic force-constant model not only describes such softening but also shows that the LCCs' Young's ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(10):105501]

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Frustrated Bearings.

R S Pires, A A Moreira, H J Herrmann, J S Andrade,

In a bearing state, touching spheres (disks in two dimensions) roll on each other without slip. Here we frustrate a system of touching spheres by imposing two different bearing states on opposite sides and search for the configurations of lowest energy dissipation. If the dissipation between contacts of spheres is ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(10):104301]

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Magnon Crystallization in the Kagome Lattice Antiferromagnet.

Jürgen Schnack, Jörg Schulenburg, Andreas Honecker, Johannes Richter,

We present numerical evidence for the crystallization of magnons below the saturation field at nonzero temperatures for the highly frustrated spin-half kagome Heisenberg antiferromagnet. This phenomenon can be traced back to the existence of independent localized magnons or, equivalently, flatband multimagnon states. We present a loop-gas description of these localized ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(11):117207]

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Morphing Supermodes: A Full Characterization for Enabling Multimode Quantum Optics.

Élie Gouzien, Sébastien Tanzilli, Virginia D'Auria, Giuseppe Patera,

In this Letter, we present a universal approach enabling the full characterization of the quantum properties of a multimode optical system in terms of squeezing and morphing supermodes. These are modes undergoing a continuous evolution that allow uncoupling the system dynamics in terms of statistically independent physical observables. This dynamical ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(10):103601]

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Thermodynamic Bethe Ansatz for Biscalar Conformal Field Theories in Any Dimension.

Benjamin Basso, Gwenaël Ferrando, Vladimir Kazakov, De-Liang Zhong,

We present the TBA equations for the exact spectrum of multi-magnon local operators in the D-dimensional bi-scalar fishnet CFT. The mixing matrix of such operators is given in terms of fishnet planar graphs of multiwheel and multispiral type. These graphs probe the two key building blocks of the TBA approach, ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(9):091601]

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ΔK=0 M1 Excitation Strength of the Well-Deformed Nucleus ^{164}Dy from K Mixing.

T Beck, V Werner, N Pietralla, M Bhike, N Cooper, U Friman-Gayer, J Isaak, R V Jolos, J Kleemann, Krishichayan, O Papst, W Tornow, C Bernards, B P Crider, R S Ilieva, B Löher, C Mihai, F Naqvi, S Pascu, E E Peters, F M Prados-Estevez, T J Ross, D Savran, J R Vanhoy, A Zilges,

The size of a ΔK=0 M1 excitation strength has been determined for the first time in a predominantly axially deformed even-even nucleus. It has been obtained from the observation of a rare K-mixing situation between two close-lying J^{π}=1^{+} states of the nucleus ^{164}Dy with components characterized by intrinsic projection quantum ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(9):092501]

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Interrogating the Temporal Coherence of EUV Frequency Combs with Highly Charged Ions.

Chunhai Lyu, Stefano M Cavaletto, Christoph H Keitel, Zoltán Harman,

A scheme to infer the temporal coherence of EUV frequency combs generated from intracavity high-order harmonic generation is put forward. The excitation dynamics of highly charged Mg-like ions, which interact with EUV pulse trains featuring different carrier-envelope-phase fluctuations, are simulated. While demonstrating the microscopic origin of the macroscopic equivalence between ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(9):093201]

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Experimental Characterization of Unsharp Qubit Observables and Sequential Measurement Incompatibility via Quantum Random Access Codes.

Hammad Anwer, Sadiq Muhammad, Walid Cherifi, Nikolai Miklin, Armin Tavakoli, Mohamed Bourennane,

Unsharp measurements are increasingly important for foundational insights in quantum theory and quantum information applications. Here, we report an experimental implementation of unsharp qubit measurements in a sequential communication protocol, based on a quantum random access code. The protocol involves three parties; the first party prepares a qubit system, the ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(8):080403]

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How Can Protons Migrate in Extremely Compressed Liquid Water?

Sho Imoto, Dominik Marx,

Compression of liquid water up to multi-kbar pressures is known to perturb dramatically its local structure required for charge defects to migrate as topological defects in the hydrogen-bonded network. Our ab initio simulations show that the migration of excess protons is not much affected at 10 kbar, whereas that of proton holes ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(8):086001]

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Benchmarking a High-Fidelity Mixed-Species Entangling Gate.

A C Hughes, V M Schäfer, K Thirumalai, D P Nadlinger, S R Woodrow, D M Lucas, C J Ballance,

We implement a two-qubit logic gate between a ^{43}Ca^{+} hyperfine qubit and a ^{88}Sr^{+} Zeeman qubit. For this pair of ion species, the S-P optical transitions are close enough that a single laser of wavelength 402 nm can be used to drive the gate but sufficiently well separated to give good ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(8):080504]

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Anharmonic Origin of the Giant Thermal Expansion of NaBr.

Y Shen, C N Saunders, C M Bernal, D L Abernathy, M E Manley, B Fultz,

All phonons in a single crystal of NaBr are measured by inelastic neutron scattering at temperatures of 10, 300, and 700 K. Even at 300 K, the phonons, especially the longitudinal-optical phonons, show large shifts in frequencies and show large broadenings in energy owing to anharmonicity. Ab initio computations are first performed with ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(8):085504]

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Jet Production in Polarized Deep Inelastic Scattering at Next-to-Next-to-Leading Order.

Ignacio Borsa, Daniel de Florian, Iván Pedron,

We present the next-to-next-to-leading order (NNLO) calculation for single-inclusive jet production in polarized deep inelastic lepton-nucleon scattering e[over →]p[over →]→jet+X. We perform the computation based on the projection-to-Born method by combining our recent next-to-leading order result for di-jet production in polarized deep inelastic lepton-nucleon scattering along with the NNLO coefficients ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(8):082001]

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Triplet Resonating Valence Bond State and Superconductivity in Hund's Metals.

Piers Coleman, Yashar Komijani, Elio J König,

A central idea in strongly correlated systems is that doping a Mott insulator leads to a superconductor by transforming the resonating valence bonds (RVBs) into spin-singlet Cooper pairs. Here, we argue that a spin-triplet RVB (tRVB) state, driven by spatially, or orbitally anisotropic ferromagnetic interactions can provide the parent state ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(7):077001]

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Orbital Angular Momentum Reversal and Asymmetry in Acoustic Vortex Beam Reflection.

Zheguang Zou, Robert Lirette, Likun Zhang,

We present acoustic modeling, measurements, and interpretation of the angular momentum carried in an ultrasonic vortex beam that is obliquely reflected off a flat water-air interface. The experimental measurements observe the theoretically predicted reversals of phase rotation, topological charge, and orbital angular momentum in a reflected vortex beam in direct ... Read more >>

Phys. Rev. Lett. (Physical review letters)
[2020, 125(7):074301]

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