Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Qutrit Randomized Benchmarking

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [1];  [4];  [2];  [2];  [2];  [1];  [1]
  1. Univ. of California, Berkeley, CA (United States). Quantum Nanoelectronics Lab.; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States). Quantum Nanoelectronics Lab.
  3. Univ. of California, Berkeley, CA (United States). Quantum Nanoelectronics Lab.; Univ. of Rochester, NY (United States)
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Ternary quantum processors offer significant potential computational advantages over conventional qubit technologies, leveraging the encoding and processing of quantum information in qutrits (three-level systems). Therefore, to evaluate and compare the performance of such emerging quantum hardware it is essential to have robust benchmarking methods suitable for a higher-dimensional Hilbert space. We demonstrate extensions of industry standard randomized benchmarking (RB) protocols, developed and used extensively for qubits, suitable for ternary quantum logic. Using a superconducting five-qutrit processor, we find an average single-qutrit process infidelity of 3.8×10-3. Through interleaved RB, we characterize a few relevant gates, and employ simultaneous RB to fully characterize crosstalk errors. Finally, we apply cycle benchmarking to a two-qutrit CSUM gate and obtain a two-qutrit process fidelity of 0.85. Our results present and demonstrate RB-based tools to characterize the performance of a qutrit processor, and a general approach to diagnose control errors in future qudit hardware.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
U.S. Department of Energy; USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1818119
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 126; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (38)

Experimental non-classicality of an indivisible quantum system journal June 2011
Implementation of a Toffoli gate with superconducting circuits journal December 2011
High-fidelity spin entanglement using optimal control journal February 2014
Continuous-variable geometric phase and its manipulation for quantum computation in a superconducting circuit journal October 2017
Random access quantum information processors using multimode circuit quantum electrodynamics journal December 2017
Characterizing large-scale quantum computers via cycle benchmarking journal November 2019
High-dimensional optical quantum logic in large operational spaces journal July 2019
Quantum supremacy using a programmable superconducting processor journal October 2019
Computational speed-up with a single qudit journal October 2015
Factorization of unitary matrices journal March 2003
Improving wafer-scale Josephson junction resistance variation in superconducting quantum coherent circuits journal May 2020
Overcoming erasure errors with multilevel systems journal January 2017
Randomized benchmarking for qudit Clifford gates journal June 2020
Efficient Toffoli gates using qudits journal February 2007
Randomized benchmarking of quantum gates journal January 2008
Optimized driving of superconducting artificial atoms for improved single-qubit gates journal October 2010
Characterizing quantum gates via randomized benchmarking journal April 2012
Characterizing errors on qubit operations via iterative randomized benchmarking journal January 2016
Efficient Z gates for quantum computing journal August 2017
Manipulating Biphotonic Qutrits journal February 2008
Simple Pulses for Elimination of Leakage in Weakly Nonlinear Qubits journal September 2009
Control and Tomography of a Three Level Superconducting Artificial Atom journal November 2010
Efficient Measurement of Quantum Gate Error by Interleaved Randomized Benchmarking journal August 2012
Characterization of Addressability by Simultaneous Randomized Benchmarking journal December 2012
Enhanced Fault-Tolerant Quantum Computing in d -Level Systems journal December 2014
Coherence and Decay of Higher Energy Levels of a Superconducting Transmon Qubit journal January 2015
Measuring and Suppressing Quantum State Leakage in a Superconducting Qubit journal January 2016
Quantum Teleportation in High Dimensions journal August 2019
Implementation of a Walsh-Hadamard Gate in a Superconducting Qutrit journal October 2020
Experimental High-Dimensional Quantum Teleportation journal December 2020
Quantum Cryptography with 3-State Systems journal October 2000
Optimal Eavesdropping in Cryptography with Three-Dimensional Quantum States journal March 2002
Experimental Two-Photon, Three-Dimensional Entanglement for Quantum Communication journal November 2002
Asymptotically Optimal Quantum Circuits for d -Level Systems journal June 2005
Efficient Multiphoton Sampling of Molecular Vibronic Spectra on a Superconducting Bosonic Processor journal June 2020
Quantum Information Scrambling on a Superconducting Qutrit Processor journal April 2021
Magic-State Distillation in All Prime Dimensions Using Quantum Reed-Muller Codes journal December 2012
Realization of a Quantum Integer-Spin Chain with Controllable Interactions journal June 2015