Materials challenges for trapped-ion quantum computers
Trapped-ion quantum information processors store information in atomic ions maintained in
position in free space by electric fields. Quantum logic is enacted through manipulation of …
position in free space by electric fields. Quantum logic is enacted through manipulation of …
Direct observation of geometric-phase interference in dynamics around a conical intersection
Conical intersections are ubiquitous in chemistry and physics, often governing processes
such as light harvesting, vision, photocatalysis and chemical reactivity. They act as funnels …
such as light harvesting, vision, photocatalysis and chemical reactivity. They act as funnels …
Microwaves in quantum computing
Quantum information processing systems rely on a broad range of microwave technologies
and have spurred development of microwave devices and methods in new operating …
and have spurred development of microwave devices and methods in new operating …
Crosstalk suppression in individually addressed two-qubit gates in a trapped-ion quantum computer
Crosstalk between target and neighboring spectator qubits due to spillover of control signals
represents a major error source limiting the fidelity of two-qubit entangling gates in quantum …
represents a major error source limiting the fidelity of two-qubit entangling gates in quantum …
[HTML][HTML] Active stabilization of ion trap radiofrequency potentials
We actively stabilize the harmonic oscillation frequency of a laser-cooled atomic ion
confined in a radiofrequency (rf) Paul trap by sampling and rectifying the high voltage rf …
confined in a radiofrequency (rf) Paul trap by sampling and rectifying the high voltage rf …
Time-dependent Hamiltonian simulation of highly oscillatory dynamics and superconvergence for Schrödinger equation
We propose a simple quantum algorithm for simulating highly oscillatory quantum dynamics,
which does not require complicated quantum control logic for handling time-ordering …
which does not require complicated quantum control logic for handling time-ordering …
Demonstration of two-atom entanglement with ultrafast optical pulses
We demonstrate quantum entanglement of two trapped atomic ion qubits using a sequence
of ultrafast laser pulses. Unlike previous demonstrations of entanglement mediated by the …
of ultrafast laser pulses. Unlike previous demonstrations of entanglement mediated by the …
Geometric control of collective spontaneous emission
Y He, L Ji, Y Wang, L Qiu, J Zhao, Y Ma, X Huang… - Physical Review Letters, 2020 - APS
Dipole spin-wave states of atomic ensembles with wave vector k (ω) mismatched from the
dispersion relation of light are difficult to access by far-field excitation but may support rich …
dispersion relation of light are difficult to access by far-field excitation but may support rich …
Spin-photon entanglement with direct photon emission in the telecom C-band
Quantum networks, relying on the distribution of quantum entanglement between remote
locations, have the potential to transform quantum computation and secure long-distance …
locations, have the potential to transform quantum computation and secure long-distance …
Frequency comb up- and down-conversion in synchronously driven χ(2) optical microresonators
Optical frequency combs are key to optical precision measurements. While most frequency
combs operate in the near-infrared (NIR) regime, many applications require combs at mid …
combs operate in the near-infrared (NIR) regime, many applications require combs at mid …