no code implementations • 27 Jan 2021 • Fernando A. Calderon-Vargas, Edwin Barnes, Sophia E. Economou
The flip-flop qubit, encoded in the states with antiparallel donor-bound electron and donor nuclear spins in silicon, showcases long coherence times, good controllability, and, in contrast to other donor-spin-based schemes, long-distance coupling.
Quantum Physics Mesoscale and Nanoscale Physics
no code implementations • 27 Jan 2021 • Ada Warren, Utkan Güngördü, J. P. Kestner, Edwin Barnes, Sophia E. Economou
Significant experimental advances in single-electron silicon spin qubits have opened the possibility of realizing long-range entangling gates mediated by microwave photons.
Quantum Physics
no code implementations • 14 Dec 2020 • Arian Vezvaee, Girish Sharma, Sophia E. Economou, Edwin Barnes
The interplay of optical driving and hyperfine interaction between an electron confined in a quantum dot and its surrounding nuclear spin environment produces a range of interesting physics such as mode-locking.
Mesoscale and Nanoscale Physics Quantum Physics
2 code implementations • 10 Aug 2020 • Oinam Romesh Meitei, Bryan T. Gard, George S. Barron, David P. Pappas, Sophia E. Economou, Edwin Barnes, Nicholas J. Mayhall
In this work, we propose an alternative algorithm (which we refer to as ctrl-VQE) where the quantum circuit used for state preparation is removed entirely and replaced by a quantum control routine which variationally shapes a pulse to drive the initial Hartree-Fock state to the full CI target state.
Quantum Physics Strongly Correlated Electrons Chemical Physics
1 code implementation • 24 Apr 2019 • Bryan T. Gard, Linghua Zhu, George S. Barron, Nicholas J. Mayhall, Sophia E. Economou, Edwin Barnes
The variational quantum eigensolver is one of the most promising approaches for performing chemistry simulations using noisy intermediate-scale quantum (NISQ) processors.
Quantum Physics
