Parametrically Activated Entangling Gates Using Transmon Qubits
S. A. Caldwell, N. Didier, C. A. Ryan, E. A. Sete, A. Hudson, P. Karalekas, R. Manenti, M. P. da Silva, R. Sinclair, E. Acala, N. Alidoust, J. Angeles, A. Bestwick, M. Block, B. Bloom, A. Bradley, C. Bui, L. Capelluto, R. Chilcott, J. Cordova, G. Crossman, M. Curtis, S. Deshpande, T. El Bouayadi, D. Girshovich, S. Hong, K. Kuang, M. Lenihan, T. Manning, A. Marchenkov, J. Marshall, R. Maydra, Y. Mohan, W. O’Brien, C. Osborn, J. Otterbach, A. Papageorge, J.-P. Paquette, M. Pelstring, A. Polloreno, G. Prawiroatmodjo, V. Rawat, M. Reagor, R. Renzas, N. Rubin, D. Russell, M. Rust, D. Scarabelli, M. Scheer, M. Selvanayagam, R. Smith, A. Staley, M. Suska, N. Tezak, D. C. Thompson, T.-W. To, M. Vahidpour, N. Vodrahalli, T. Whyland, K. Yadav, W. Zeng, C. Rigetti
DOI 10.1103/PhysRevApplied.10.034050 · Physical Review Applied
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We describe and implement a family of entangling gates activated by radio-frequency flux modulation applied to a tunable transmon that is statically coupled to a neighboring transmon. The effect of this modulation is the resonant exchange of photons directly between levels of the two-transmon system, obviating the need for mediating qubits or resonator modes and allowing for the full utilization of all qubits in a scalable architecture. The resonance condition is selective in both the frequency and amplitude of modulation and thus alleviates frequency crowding. We demonstrate the use of three such resonances to produce entangling gates that enable universal quantum computation: one iSWAP gate and two distinct controlled-Z gates. We report interleaved randomized benchmarking results indicating gate error rates of 6% for the iSWAP (duration 135 ns) and 9% for the controlled-Z gates (durations 175 and 270 ns), limited largely by qubit coherence.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ti/Pd Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Nonlinear microwave photon occupancy of a driven resonator strongly coupled to a transmon qubit
similarity 0.92B. Suri et al.
Source status unknown — claims are unverified
Multiplexed readout of transmon qubits with Josephson bifurcation amplifiers
similarity 0.92V. Schmitt et al.
Source status unknown — claims are unverified
Controlling the Spontaneous Emission of a Superconducting Transmon Qubit
similarity 0.92A. A. Houck et al.
Source status unknown — claims are unverified
Singlet-Doublet Transitions of a Quantum Dot Josephson Junction Detected in a Transmon Circuit
similarity 0.92Arno Bargerbos et al.
Source status unknown — claims are unverified
Quantum interface between a transmon qubit and spins of nitrogen-vacancy centers
similarity 0.91Yaowen Hu et al.
Source status unknown — claims are unverified
Analysis of a parametrically driven exchange-type gate and a two-photon excitation gate between superconducting qubits
similarity 0.91Marco Roth et al.
Source status unknown — claims are unverified