Entangling Bosonic Modes via an Engineered Exchange Interaction
Invited
Abstract
The realization of robust universal quantum computation with any platform ultimately requires both the coherent storage of quantum information and (at least) one entangling operation between individual elements. The use of continuous-variable bosonic modes as the quantum element is a promising route to preserve the coherence of quantum information against naturally-occurring errors. However, operations between bosonic modes can be challenging. In analogy to the exchange interaction between discrete-variable spin systems, the exponential-SWAP unitary can coherently transfer the states between two bosonic modes, regardless of the chosen encoding, realizing a deterministic entangling operation in a programmable fashion. Here, we develop an efficient circuit to implement this unitary and realize the operation in a three-dimensional circuit QED architecture. We demonstrate high-quality deterministic entanglement between two cavity modes with several different encodings. Our results provide a crucial primitive necessary for universal quantum computation using bosonic modes.
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Presenters
Yvonne Gao
Natl Univ of Singapore, Yale University
Authors
Yvonne Gao
Natl Univ of Singapore, Yale University
Brian Lester
Yale University, Atom Computing, Inc
Michel H. Devoret
Yale University, Department of Applied Physics, Yale University, Applied Physics, Yale University
Luigi Frunzio
Yale University, Department of Applied Physics, Yale University, Departments of Applied Physics and Physics, Yale University
Liang Jiang
University of Chicago, Pritzker school of molecular engineering, University of Chicago, Yale University
Steven Girvin
Yale University, Department of Physics and Applied Physics, Yale University, Department of Physics, Yale University, Yale Quantum Institute, Yale University
Robert Schoelkopf
Yale University, Department of Applied Physics, Yale University, Departments of Applied Physics and Physics, Yale University
