Efficient unitary designs with a system-size independent number of non-Clifford gates

Posted by dbos UCSB

Kavli Affiliate: David Gross | First 5 Authors: Jonas Haferkamp, Felipe Montealegre-Mora, Markus Heinrich, Jens Eisert, David Gross | Summary: Many quantum information protocols require the implementation of random unitaries. Because it takes exponential resources to produce Haar-random unitaries drawn from the full $n$-qubit group, one often resorts to $t$-designs. Unitary $t$-designs mimic the Haar-measure […]


Continue.. Efficient unitary designs with a system-size independent number of non-Clifford gates

Spectral analysis on standard locally homogeneous spaces

Posted by dbos Tokyo

Kavli Affiliate: Toshiyuki Kobayashi | First 5 Authors: Fanny Kassel, Toshiyuki Kobayashi, , , | Summary: Let $X=G/H$ be a reductive homogeneous space with $H$ noncompact, endowed with a $G$-invariant pseudo-Riemannian structure. Let $L$ be a reductive subgroup of $G$ acting properly on $X$ and $Gamma$ a torsion-free discrete subgroup of $L$. Under the assumption […]


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Hamiltonian deformations in quantum mechanics, $Tbar T$, and SYK

Posted by dbos UCSB

Kavli Affiliate: David J. Gross | First 5 Authors: David J. Gross, Jorrit Kruthoff, Andrew Rolph, Edgar Shaghoulian, | Summary: Motivated by $Tbar T$, we introduce and study a wide class of solvable deformations of quantum-mechanical theories. These deformations map the Hamiltonian to a function of itself. We solve these theories by computing all finite-temperature […]


Continue.. Hamiltonian deformations in quantum mechanics, $Tbar T$, and SYK

Hamiltonian deformations in quantum mechanics, $Tbar T$, and SYK

Posted by dbos UCSB

Kavli Affiliate: David J. Gross | First 5 Authors: David J. Gross, Jorrit Kruthoff, Andrew Rolph, Edgar Shaghoulian, | Summary: Motivated by $Tbar T$, we introduce and study a wide class of solvable deformations of quantum-mechanical theories. These deformations map the Hamiltonian to a function of itself. We solve these theories by computing all finite-temperature […]


Continue.. Hamiltonian deformations in quantum mechanics, $Tbar T$, and SYK

Measurement of Beam-Correlated Background Neutrons from the Fermilab Booster Neutrino Beam in ANNIE Phase-I

Posted by dbos Tokyo

Kavli Affiliate: Mark Vagins | First 5 Authors: Asheley R. Back, John F. Beacom, Tomaso Boschi, Daniel Carber, Erika Catano-Mur | Summary: The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) aims to make a unique measurement of neutron yield from neutrino-nucleus interactions and to perform R&D for the next generation of water-based neutrino detectors. In this […]


Continue.. Measurement of Beam-Correlated Background Neutrons from the Fermilab Booster Neutrino Beam in ANNIE Phase-I

Development of Dual-phase Xenon TPC with a Quartz Chamber for Direct Dark Matter Search

Posted by dbos Tokyo

Kavli Affiliate: Masaki Yamashita | First 5 Authors: Kazufumi Sato, Masaki Yamashita, Koichi Ichimura, Yoshitaka Itow, Shingo Kazama | Summary: The idea of a hermetic quartz chamber in a dual-phase xenon time projection chamber (TPC) has the potential to improve the detector sensitivity for direct dark matter searches in the future. A major challenge facing […]


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Observation of spin-momentum locked surface states in amorphous Bi$_{2}$Se$_{3}$

Posted by dbos Berkeley

Kavli Affiliate: Alessandra Lanzara | First 5 Authors: , , , , | Summary: Crystalline symmetries have played a central role in the identification of topological materials. The use of symmetry indicators and band representations have enabled a classification scheme for crystalline topological materials, leading to large scale topological materials discovery. In this work we […]


Continue.. Observation of spin-momentum locked surface states in amorphous Bi$_{2}$Se$_{3}$

Dissipation-enabled hydrodynamic conductivity in a tunable bandgap semiconductor

Posted by dbos Cornell

Kavli Affiliate: Paul L. McEuen | First 5 Authors: Cheng Tan, Derek Y. H. Ho, Lei Wang, J. I. A. Li, Indra Yudhistira | Summary: Electronic transport in the regime where carrier-carrier collisions are the dominant scattering mechanism has taken on new relevance with the advent of ultraclean two-dimensional materials. Here we present a combined […]


Continue.. Dissipation-enabled hydrodynamic conductivity in a tunable bandgap semiconductor