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 14:00:00 2023-02-14 15:00:00 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

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 Department of Physics physics@osu.edu 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.