Quantum circuits present a powerful framework for achieving new functionality by combining circuit elements into larger networks. However achieving quantitative modeling of large quantum circuits such as fluxonium, is hampered by non-linearity, interactions and a large number of degrees of freedom. In our paper we make use of approximate Unitary and Symmetric group symmetries to […]
In circuit QED, protocols for quantum gates and readout of superconducting qubits often rely on the dispersive regime, reached when the qubit-photon detuning $Delta$ is large compared to their mutual coupling strength. For qubits including the Cooper-pair box and transmon, selection rules dramatically restrict the contributions to dispersive level shifts $chi$. By contrast, without […]
The Houck Lab at Princeton has recently fabricated and characterized the first microwave resonator arrays. The selected array geometry consists of 12 coplanar waveguide resonators, coupled by three-way capacitors to form a Kagome star. The successful reduction of disorder in resonator frequencies to as little as a few parts in 104 paves the way for […]
Check out the latest review article on “On-chip quantum simulation with superconducting circuits” in the April edition of Nature Physics. Link: Nature Physics paper.
A recent TED talk gives the most entertaining 15-minute whirlwind tour of quantum computation. – Scott Aaronson (Professor at MIT) not only explains what quantum computation is, and why we are excited about it, but he also makes the case that research in this direction could lead to substantial progress in understanding quantum mechanics itself. […]
Why Quantum Physics is Weird – and Stunningly Useful