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Thermal light in confined dimensions for "laser" cooling with unfiltered sunlight
Amanda Younes, Wesley C. Campbell
Cooling of systems to sub-kelvin temperatures is usually done using either a cold bath of particles or spontaneous photon scattering from a laser field; in either case, cooling is…
Photon scattering errors during stimulated Raman transitions in trapped-ion qubits
I. D. Moore, W. C. Campbell, E. R. Hudson +3
We study photon scattering errors in stimulated Raman driven quantum logic gates. For certain parameter regimes, we find that previous, simplified models of the process significant…
Errors in stimulated-Raman-induced logic gates in Ba
Matthew J. Boguslawski, Zachary J. Wall, Samuel R. Vizvary +6
is illuminated by a laser that is far-detuned from optical transitions, and the resulting spontaneous Raman scattering rate is measured. The observed scatte…
Polyqubit quantum processing
Wesley C. Campbell, Eric R. Hudson
We describe the encoding of multiple qubits per atom in trapped atom quantum processors and methods for performing both intra- and inter-atomic gates on participant qubits without…
Quantum Error Correction with Metastable States of Trapped Ions Using Erasure Conversion
Mingyu Kang, Wesley C. Campbell, Kenneth R. Brown
Erasures, or errors with known locations, are a more favorable type of error for quantum error-correcting codes than Pauli errors. Converting physical noise into erasures can signi…
Blueprint for trapped ion quantum computing with metastable states
D. T. C. Allcock, W. C. Campbell, J. Chiaverini +7
Quantum computers, much like their classical counterparts, will likely benefit from flexible qubit encodings that can be matched to different tasks. For trapped ion quantum process…
Weak dissipation for high fidelity qubit state preparation and measurement
Anthony Ransford, Conrad Roman, Thomas Dellaert +2
Highly state-selective, weakly dissipative population transfer is used to irreversibly move the population of one ground state qubit level of an atomic ion to an effectively stable…
Quantum Gates Robust to Secular Amplitude Drifts
Qile David Su, Robijn Bruinsma, Wesley C. Campbell
Quantum gates are typically vulnerable to imperfections in the classical control fields applied to physical qubits to drive the gates. One approach to reduce this source of error i…