Michael Hatridge (University of Pittsburgh)-Parametric controls and modular quantum computing in superconducting quantum circuits

February 14, 2023

1:00PM - 2:00PM

1080 Physics Research Building

Add to Calendar 2023-02-14 13:00:00 2023-02-14 14:00:00 Michael Hatridge (University of Pittsburgh)-Parametric controls and modular quantum computing in superconducting quantum circuits Dr. Michael Hatridge University of Pittsburgh Parametric controls and modular quantum computing in superconducting quantum circuits Location: 1080 Physics Research Building, Smith Seminar Room Faculty Hosts: Ezekiel Johnston-Halperin & Ron Reano Abstract: Parametric driving has long been used in weakly nonlinear superconducting circuits to create nearly quantum-limited ‘parametric’ amplifiers, which are in wide use for the readout of superconducting qubits. However, the off-resonant terms we can activate with parametric driving are ubiquitous in Josephson-junction based circuits. In this talk, I’ll review the basics of how we identify and engineer parametric controls in the laboratory and use them in a variety of applications including qubit bath engineering and single- and multi-qubit gates. I will focus on how we are using parametric controls based on the third order nonlinearity of SNAILs to create all-to-all couplings among transmon qubits in small quantum modules, as well as construct quantum state routers to link these modules into large-scale quantum machines. Bio: Michael Hatridge is an Associate Professor of Physics at the University of Pittsburgh. He received his B.S. from Texas A&M University and Ph. D. from U.C. Berkeley under the supervision of John Clarke. His work focuses on the use of parametric drives to generate quantum controls, including single- and multi-qubit gates and engineered baths. His lab builds a variety of superconducting quantum circuits, including quantum-limited parametric amplifiers and modular quantum computers. He is a recipient of the Michelson postdoctoral fellowship, the NSF Career Award, the Sloan Research Fellowship, and the University of Pittsburgh’s Chancellor’s Distinguished Research Award. 1080 Physics Research Building OSU ASC Drupal 8 ascwebservices@osu.edu America/New_York public

2023-02-14 13:00:00 2023-02-14 14:00:00 Michael Hatridge (University of Pittsburgh)-Parametric controls and modular quantum computing in superconducting quantum circuits Dr. Michael Hatridge University of Pittsburgh Parametric controls and modular quantum computing in superconducting quantum circuits Location: 1080 Physics Research Building, Smith Seminar Room Faculty Hosts: Ezekiel Johnston-Halperin & Ron Reano Abstract: Parametric driving has long been used in weakly nonlinear superconducting circuits to create nearly quantum-limited ‘parametric’ amplifiers, which are in wide use for the readout of superconducting qubits.   However, the off-resonant terms we can activate with parametric driving are ubiquitous in Josephson-junction based circuits.  In this talk, I’ll review the basics of how we identify and engineer parametric controls in the laboratory and use them in a variety of applications including qubit bath engineering and single- and multi-qubit gates.  I will focus on how we are using parametric controls based on the third order nonlinearity of SNAILs to create all-to-all couplings among transmon qubits in small quantum modules, as well as construct quantum state routers to link these modules into large-scale quantum machines.  Bio: Michael Hatridge is an Associate Professor of Physics at the University of Pittsburgh. He received his B.S. from Texas A&M University and Ph. D. from U.C. Berkeley under the supervision of John Clarke. His work focuses on the use of parametric drives to generate quantum controls, including single- and multi-qubit gates and engineered baths.  His lab builds a variety of superconducting quantum circuits, including quantum-limited parametric amplifiers and modular quantum computers.  He is a recipient of the Michelson postdoctoral fellowship, the NSF Career Award, the Sloan Research Fellowship, and the University of Pittsburgh’s Chancellor’s Distinguished Research Award.          1080 Physics Research Building America/New_York public

Dr. Michael Hatridge

University of Pittsburgh

Parametric controls and modular quantum computing in superconducting quantum circuits

Location: 1080 Physics Research Building, Smith Seminar Room

Faculty Hosts: Ezekiel Johnston-Halperin & Ron Reano

Abstract: Parametric driving has long been used in weakly nonlinear superconducting circuits to create nearly quantum-limited ‘parametric’ amplifiers, which are in wide use for the readout of superconducting qubits. However, the off-resonant terms we can activate with parametric driving are ubiquitous in Josephson-junction based circuits. In this talk, I’ll review the basics of how we identify and engineer parametric controls in the laboratory and use them in a variety of applications including qubit bath engineering and single- and multi-qubit gates. I will focus on how we are using parametric controls based on the third order nonlinearity of SNAILs to create all-to-all couplings among transmon qubits in small quantum modules, as well as construct quantum state routers to link these modules into large-scale quantum machines.

Bio: Michael Hatridge is an Associate Professor of Physics at the University of Pittsburgh. He received his B.S. from Texas A&M University and Ph. D. from U.C. Berkeley under the supervision of John Clarke. His work focuses on the use of parametric drives to generate quantum controls, including single- and multi-qubit gates and engineered baths. His lab builds a variety of superconducting quantum circuits, including quantum-limited parametric amplifiers and modular quantum computers. He is a recipient of the Michelson postdoctoral fellowship, the NSF Career Award, the Sloan Research Fellowship, and the University of Pittsburgh’s Chancellor’s Distinguished Research Award.