140 citations · 377 across the 6 of their papers we have counts for
6 papers · 1 filter
Reducing the error rate of a superconducting logical qubit using analog readout information
Hany Ali, Jorge Marques, Ophelia Crawford +7
Quantum error correction enables the preservation of logical qubits with a lower logical error rate than the physical error rate, with performance depending on the decoding method.…
All-microwave leakage reduction units for quantum error correction with superconducting transmon qubits
J. F. Marques, H. Ali, B. M. Varbanov +9
Minimizing leakage from computational states is a challenge when using many-level systems like superconducting quantum circuits as qubits. We realize and extend the quantum-hardwar…
Post-fabrication frequency trimming of coplanar-waveguide resonators in circuit QED quantum processors
S. Vallés-Sanclemente, S. L. M. van der Meer, M. Finkel +9
We present the use of grounding airbridge arrays to trim the frequency of microwave coplanar-waveguide (CPW) resonators post fabrication. This method is compatible with the fabrica…
Deployed MDI-QKD and Bell-State Measurements Coexisting with Standard Internet Data and Networking Equipment
Remon C. Berrevoets, Thomas Middelburg, Raymond F. L. Vermeulen +8
The forthcoming quantum Internet is poised to allow new applications not possible with the conventional Internet. The ability for both quantum and conventional networking equipment…
Logical-qubit operations in an error-detecting surface code
J. F. Marques, B. M. Varbanov, M. S. Moreira +10
We realize a suite of logical operations on a distance-two logical qubit stabilized using repeated error detection cycles. Logical operations include initialization into arbitrary…
High-fidelity controlled-Z gate with maximal intermediate leakage operating at the speed limit in a superconducting quantum processor
V. Negîrneac, H. Ali, N. Muthusubramanian +9
We introduce the sudden variant (SNZ) of the Net Zero scheme realizing controlled- (CZ) gates by baseband flux control of transmon frequency. SNZ CZ gates operate at the speed l…