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   Articles with "ancilla" as a keyword



Symmetry restoring and ancilla-driven entanglement for ultra-cold spin-1 atoms in a three-site ring

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recommendations! Published in 2017 at "Quantum Information Processing"

DOI: 10.1007/s11128-016-1465-y

Abstract: The spin-change dynamics of a model with ultra-cold hyperfine-spin-1 atoms confined in an optical superlattice is discussed. First, the disturbance of the two-site dynamics by coupling the dimer to a spin-1 ancilla is analyzed. When… read more here.

Keywords: three site; site; spin; ultra cold ... See more keywords

Thermodynamics of ancilla-assisted erasure of quantum information

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recommendations! Published in 2024 at "Quantum Information Processing"

DOI: 10.1007/s11128-025-04770-1

Abstract: Landauer’s principle sets a fundamental limit on the heat dissipated when one classical bit of information is erased from a memory, thereby establishing a direct link between information theory and thermodynamics. With the advent of… read more here.

Keywords: qubit; information; thermodynamics; ancilla ... See more keywords

Quantum algorithm for spectral projection by measuring an ancilla iteratively

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recommendations! Published in 2020 at "Physical Review A"

DOI: 10.1103/physreva.101.032339

Abstract: We propose a quantum algorithm for projecting to eigenstates of any hermitian operator, provided one can access the associated control-unitary evolution and measurement of the ancilla of the control. The procedure is iterative and the… read more here.

Keywords: projection measuring; quantum algorithm; spectral projection; algorithm spectral ... See more keywords

Harrow-Hassidim-Lloyd algorithm without ancilla postselection

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recommendations! Published in 2022 at "Physical Review A"

DOI: 10.1103/physreva.107.042408

Abstract: Harrow-Hassidim-Lloyd algorithm (HHL) allows for the exponentially faster solution of a system of linear equations. However, this algorithm requires the postselection of an ancilla qubit to obtain the solution. This postselection makes the algorithm result… read more here.

Keywords: harrow hassidim; lloyd algorithm; ancilla; postselection ... See more keywords

Crosstalk-robust quantum control in multimode bosonic systems

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recommendations! Published in 2024 at "Physical Review Applied"

DOI: 10.1103/physrevapplied.22.044072

Abstract: High-coherence superconducting cavities offer a hardware-efficient platform for quantum information processing. To achieve universal operations of these bosonic modes, the requisite nonlinearity is realized by coupling them to a transmon ancilla. However, this configuration is… read more here.

Keywords: control; mode; ancilla; crosstalk robust ... See more keywords