559 citations · 4.8k across the 26 of their papers we have counts for
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Sequential quantum simulation of spin chains with a single circuit QED device
Yuxuan Zhang, Shahin Jahanbani, Ameya Riswadkar +2
Quantum simulation of many-body systems in materials science and chemistry are promising application areas for quantum computers. However, the limited scale and coherence of near-t…
Fully Directional Quantum-limited Phase-Preserving Amplifier
Gangqiang Liu, Andrew Lingenfelter, Vidul R. Joshi +4
We present a way to achieve fully directional, quantum-limited phase-preserving amplification in a four-port, four-mode superconducting Josephson circuit by utilizing interference…
Quantum Microwave Radiometry with a Superconducting Qubit
Zhixin Wang, Mingrui Xu, Xu Han +6
The interaction of photons and coherent quantum systems can be employed to detect electromagnetic radiation with remarkable sensitivity. We introduce a quantum radiometer based on…
Josephson Array Mode Parametric Amplifier
V. V. Sivak, S. Shankar, G. Liu +2
We introduce a novel near-quantum-limited amplifier with a large tunable bandwidth and high dynamic range - the Josephson Array Mode Parametric Amplifier (JAMPA). The signal and id…
Quantum error correction of a qubit encoded in grid states of an oscillator
P. Campagne-Ibarcq, A. Eickbusch, S. Touzard +10
Quantum bits are more robust to noise when they are encoded non-locally. In such an encoding, errors affecting the underlying physical system can then be detected and corrected bef…
Quantum back-action of variable-strength measurement
M. Hatridge, S. Shankar, M. Mirrahimi +9
Measuring a quantum system can randomly perturb its state. The strength and nature of this back-action depends on the quantity which is measured. In a partial measurement performed…
Kerr-free three-wave mixing in superconducting quantum circuits
V. V. Sivak, N. E. Frattini, V. R. Joshi +3
Quantum-limited Josephson parametric amplifiers are crucial components in circuit QED readout chains. The dynamic range of state-of-the-art parametric amplifiers is limited by sign…
Heralded Generation and Detection of Entangled Microwave--Optical Photon Pairs
Changchun Zhong, Zhixin Wang, Changling Zou +8
Quantum state transfer between microwave and optical frequencies is essential for connecting superconducting quantum circuits to coherent optical systems and extending microwave qu…
Gated conditional displacement readout of superconducting qubits
S. Touzard, A. Kou, N. E. Frattini +6
We have realized a new interaction between superconducting qubits and a readout cavity that results in the displacement of a coherent state in the cavity, conditioned on the state…
To catch and reverse a quantum jump mid-flight
Z. K. Minev, S. O. Mundhada, S. Shankar +6
Quantum physics was invented to account for two fundamental features of measurement results -- their discreetness and randomness. Emblematic of these features is Bohr's idea of qua…
Deterministic remote entanglement of superconducting circuits through microwave two-photon transitions
P. Campagne-Ibarcq, E. Zalys-Geller, A. Narla +8
Large-scale quantum information processing networks will most probably require the entanglement of distant systems that do not interact directly. This can be done by performing ent…
Driving forbidden transitions in the fluxonium artificial atom
U. Vool, A. Kou, W. C. Smith +8
Atomic systems display a rich variety of quantum dynamics due to the different possible symmetries obeyed by the atoms. These symmetries result in selection rules that have been es…
Robust concurrent remote entanglement between two superconducting qubits
A. Narla, S. Shankar, M. Hatridge +8
Entangling two remote quantum systems which never interact directly is an essential primitive in quantum information science and forms the basis for the modular architecture of qua…
Comparing and combining measurement-based and driven-dissipative entanglement stabilization
Yehan Liu, Shyam Shankar, Nissim Ofek +6
We demonstrate and contrast two approaches to the stabilization of qubit entanglement by feedback. Our demonstration is built on a feedback platform consisting of two superconducti…
The reconfigurable Josephson circulator/directional amplifier
K. M. Sliwa, M. Hatridge, A. Narla +4
Circulators and directional amplifiers are crucial non-reciprocal signal routing and processing components involved in microwave readout chains for a variety of applications. They…
Confining the state of light to a quantum manifold by engineered two-photon loss
Zaki Leghtas, Steven Touzard, Ioan M. Pop +12
Physical systems usually exhibit quantum behavior, such as superpositions and entanglement, only when they are sufficiently decoupled from a lossy environment. Paradoxically, a spe…
Non-Poissonian Quantum Jumps of a Fluxonium Qubit due to Quasiparticle Excitations
Uri Vool, Ioan M. Pop, Katrina Sliwa +12
As the energy relaxation time of superconducting qubits steadily improves, non-equilibrium quasiparticle excitations above the superconducting gap emerge as an increasingly relevan…
Tracking Photon Jumps with Repeated Quantum Non-Demolition Parity Measurements
L. Sun, A. Petrenko, Z. Leghtas +11
Quantum error correction (QEC) is required for a practical quantum computer because of the fragile nature of quantum information. In QEC, information is redundantly stored in a lar…
Stabilizing a Bell state of two superconducting qubits by dissipation engineering
Z. Leghtas, U. Vool, S. Shankar +4
We propose a dissipation engineering scheme that prepares and protects a maximally entangled state of a pair of superconducting qubits. This is done by off-resonantly coupling the…
Solid state quantum memory using the 31P nuclear spin
John J. L. Morton, Alexei M. Tyryshkin, Richard M. Brown +7
The transfer of information between different physical forms is a central theme in communication and computation, for example between processing entities and memory. Nowhere is thi…