176 citations · 966 across the 11 of their papers we have counts for
11 papers
Manufacturing high-Q superconducting α-tantalum resonators on silicon wafers
D. P. Lozano, M. Mongillo, X. Piao +19
The performance of state-of-the-art superconducting quantum devices is currently limited by microwave dielectric losses at different surfaces and interfaces. α-tantalum is a superc…
Overcoming I/O bottleneck in superconducting quantum computing: multiplexed qubit control with ultra-low-power, base-temperature cryo-CMOS multiplexer
Rohith Acharya, Steven Brebels, Alexander Grill +14
Large-scale superconducting quantum computing systems entail high-fidelity control and readout of large numbers of qubits at millikelvin temperatures, resulting in a massive input-…
Path toward manufacturable superconducting qubits with relaxation times exceeding 0.1 ms
J. Verjauw, R. Acharya, J. Van Damme +11
As the superconducting qubit platform matures towards ever-larger scales in the race towards a practical quantum computer, limitations due to qubit inhomogeneity through lack of pr…
Quantum Simulation of the Bosonic Creutz Ladder with a Parametric Cavity
Jimmy S. C. Hung, J. H. Busnaina, C. W. Sandbo Chang +6
There has been a growing interest in realizing quantum simulators for physical systems where perturbative methods are ineffective. The scalability and flexibility of circuit quantu…
Engineering the Level Structure of a Giant Artificial Atom in Waveguide Quantum Electrodynamics
A. M. Vadiraj, Andreas Ask, T. G. McConkey +4
Engineering light-matter interactions at the quantum level has been central to the pursuit of quantum optics for decades. Traditionally, this has been done by coupling emitters, ty…
Receiver Operating Characteristics for a Prototype Quantum Two-Mode Squeezing Radar
David Luong, C. W. Sandbo Chang, A. M. Vadiraj +3
We have built and evaluated a prototype quantum radar, which we call a quantum two-mode squeezing radar (QTMS radar), in the laboratory. It operates solely at microwave frequencies…
Quantum-Enhanced Noise Radar
C. W. Sandbo Chang, A. M. Vadiraj, J. Bourassa +2
We propose a novel protocol for quantum illumination: a quantum-enhanced noise radar. A two-mode squeezed state, which exhibits continuous-variable entanglement between so-called s…
Generating Multimode Entangled Microwaves with a Superconducting Parametric Cavity
C. W. Sandbo Chang, M. Simoen, José Aumentado +7
In this Letter, we demonstrate the generation of multimode entangled states of propagating microwaves. The entangled states are generated by parametrically pumping a multimode supe…
On-demand microwave generator of shaped single photons
P. Forn-Díaz, C. W. Warren, C. W. S. Chang +2
We demonstrate the full functionality of a circuit that generates single microwave photons on demand, with a wave packet that can be modulated with a near-arbitrary shape. We achie…
Smart packaging of electronics and integrated MEMS devices using LTCC
Suhas Kumar, A. M. Vadiraj
Low Temperature Cofired Ceramics (LTCC) has been a popular multi layer ceramic (MCM) packaging material for many electronic applications. The main advantage with LTCC would be its…
Broadband parametric amplification with impedance engineering: Beyond the gain-bandwidth product
Tanay Roy, Suman Kundu, Madhavi Chand +7
We present an impedance engineered Josephson parametric amplifier capable of providing bandwidth beyond the traditional gain-bandwidth product. We achieve this by introducing a pos…