activity
20122026
most citedBroadband parametric amplification with impedance engineering: Beyond the gain-bandwidth product

173 citations · 716 across the 21 of their papers we have counts for

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Showing 2023 · quant-phShow all

6 papers · 2 filters

quant-ph2023★ 24 cited

Stimulated emission of signal photons from dark matter waves

Ankur Agrawal, Akash V. Dixit, Tanay Roy +5

The manipulation of quantum states of light has resulted in significant advancements in both dark matter searches and gravitational wave detectors [1-4]. Current dark matter search…

quant-ph2023★ 21 cited

Exploring Ququart Computation on a Transmon using Optimal Control

Lennart Maximilian Seifert, Ziqian Li, Tanay Roy +3

Contemporary quantum computers encode and process quantum information in binary qubits (d = 2). However, many architectures include higher energy levels that are left as unused com…

quant-ph2023★ 123 cited

Systematic Improvements in Transmon Qubit Coherence Enabled by Niobium Surface Encapsulation

Mustafa Bal, Akshay A. Murthy, Shaojiang Zhu +37

We present a novel transmon qubit fabrication technique that yields systematic improvements in T relaxation times. We fabricate devices using an encapsulation strategy that inv…

quant-ph2023★ 13 cited

Dancing the Quantum Waltz: Compiling Three-Qubit Gates on Four Level Architectures

Andrew Litteken, Lennart Maximilian Seifert, Jason D. Chadwick +6

Superconducting quantum devices are a leading technology for quantum computation, but they suffer from several challenges. Gate errors, coherence errors and a lack of connectivity…

quant-ph2023★ 4 cited

Hardware efficient autonomous error correction with linear couplers in superconducting circuits

Ziqian Li, Tanay Roy, David Rodríguez Pérez +2

Large-scale quantum computers will inevitably need quantum error correction (QEC) to protect information against decoherence. Given that the overhead of such error correction is of…

quant-ph2023★ 1 cited

Autonomous error correction of a single logical qubit using two transmons

Ziqian Li, Tanay Roy, David Rodriguez Perez +3

Large-scale quantum computers will inevitably need quantum error correction to protect information against decoherence. Traditional error correction typically requires many qubits,…