Splitting phonons: Building a platform for linear mechanical quantum computing
- Univ. of Chicago, IL (United States)
- Univ. of Chicago, IL (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Univ. of Grenoble (France); Alternative Energies and Atomic Energy Commission (CEA), Cadarache (France)
- Univ. of Chicago, IL (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
Linear optical quantum computing provides a desirable approach to quantum computing, with only a short list of required computational elements. The similarity between photons and phonons points to the interesting potential for linear mechanical quantum computing using phonons in place of photons. Although single-phonon sources and detectors have been demonstrated, a phononic beam splitter element remains an outstanding requirement. Here we demonstrate such an element, using two superconducting qubits to fully characterize a beam splitter with single phonons. We further use the beam splitter to demonstrate two-phonon interference, a requirement for two-qubit gates in linear computing. In conclusion, this advances a new solid-state system for implementing linear quantum computing, further providing straightforward conversion between itinerant phonons and superconducting qubits.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); National Quantum Information Science (QIS) Research Centers (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF); USDOE Office of Science (SC); US Air Force Office of Scientific Research (AFOSR); US Army Research Laboratory (USARL)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 2427971
- Journal Information:
- Science, Journal Name: Science Journal Issue: 6649 Vol. 380; ISSN 0036-8075
- Publisher:
- AAASCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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