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107 papers · 1 filter
Krylov complexity and fidelity susceptibility in two-band Hamiltonians
Rishav Chaudhuri, Ayush Raj, Soham Ray +1
We investigate Krylov spread complexity for the ground state of two-band Hamiltonians, where the reference state is a generic state on the Bloch sphere. The spread complexity is ob…
Entangling Superconducting Qubits via Energy-Selective Local Reservoirs
Qihao Guo, Botao Du, Ruichao Ma
Engineered dissipation provides a powerful route to controlling and stabilizing quantum states in open systems. Superconducting circuits are particularly suited to this approach du…
Degrees, Levels, and Profiles of Contextuality
Ehtibar N. Dzhafarov, Victor H. Cervantes
We introduce a new notion, that of a contextuality profile of a system of random variables. Rather than characterizing a system's contextuality by a single number, its overall degr…
Re-examining the Role of State Texture in Gate Identification and Fixed-Point Resource Theories
Alexander C. B. Greenwood, Joseph M. Lukens, Li Qian +1
A protocol for identifying controlled-NOT (CNOT) gates versus single-qubit-only gates in universal quantum circuits using randomized input states was recently shown to be intimatel…
A paradigm for universal quantum information processing with integrated acousto-optic frequency beamsplitters
Joseph M. Lukens, John H. Dallyn, Hsuan-Hao Lu +5
Frequency-bin encoding offers tremendous potential in quantum photonic information processing, in which a single waveguide can support hundreds of lightpaths in a naturally phase-s…
Hong-Ou-Mandel two-photon x-ray states
Liam Powers, Stephen Durbin
We have observed Hong-Ou-Mandel interference of high-brightness synchrotron x-rays with a Mach-Zehnder interferometer, yielding two-photon states of potential interest for x-ray qu…