482 citations · 781 across the 9 of their papers we have counts for
9 papers
Decoherence of a tunable capacitively shunted flux qubit
R. Trappen, X. Dai, M. A. Yurtalan +19
Quantum annealing is a method to solve optimization problems that leverages quantum tunneling in a coupled qubit system. We present a detailed study of the coherence of a tunable c…
Dissipative Landau-Zener tunneling in the crossover regime from weak to strong environment coupling
X. Dai, R. Trappen, H. Chen +22
Landau-Zener tunneling, which describes the transition in a two-level system during a sweep through an anti-crossing, is a model applicable to a wide range of physical phenomena. R…
Demonstration of long-range correlations via susceptibility measurements in a one-dimensional superconducting Josephson spin chain
Daniel M. Tennant, Xi Dai, Antonio J. Martinez +20
Spin chains have long been considered an effective medium for long-range interactions, entanglement generation, and quantum state transfer. In this work, we explore the properties…
Calibration of flux crosstalk in large-scale flux-tunable superconducting quantum circuits
X. Dai, D. M. Tennant, R. Trappen +16
Magnetic flux tunability is an essential feature in most approaches to quantum computing based on superconducting qubits. Independent control of the fluxes in multiple loops is ham…
Characterization of Control in a Superconducting Qutrit Using Randomized Benchmarking
M. Kononenko, M. A. Yurtalan, S. Ren +3
We characterize control of a qutrit implemented in the lowest three energy levels of a capacitively-shunted flux-biased superconducting circuit. Randomized benchmarking over the qu…
Implementation of a Walsh-Hadamard gate in a superconducting qutrit
M. A. Yurtalan, J. Shi, M. Kononenko +2
We have implemented a Walsh-Hadamard gate, which performs a quantum Fourier transform, in a superconducting qutrit. The qutrit is encoded in the lowest three energy levels of a cap…
Probing the strongly driven spin-boson model in a superconducting quantum circuit
L. Magazzù, P. Forn-Díaz, R. Belyansky +6
Quantum two-level systems interacting with the surroundings are ubiquitous in nature. The interaction suppresses quantum coherence and forces the system towards a steady state. Suc…
Ultrastrong coupling of a single artificial atom to an electromagnetic continuum in the nonperturbative regime
P. Forn-Díaz, J. J. García-Ripoll, B. Peropadre +5
The study of light-matter interaction has led to many fundamental discoveries as well as numerous important technologies. Over the last decades, great strides have been made in inc…
Suspended graphene devices with local gate control on an insulating substrate
Florian R. Ong, Zheng Cui, Muhammet A. Yurtalan +6
We present a fabrication process for graphene-based devices where a graphene monolayer is suspended above a local metallic gate placed in a trench. As an example we detail the fabr…