Schuster Lab
Quantizing computers one circuit at a time.
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Research ProjectsCircuit Quantum Electrodynamics We have built an integrated circuit in which a superconducting “qubit,” or artificial atom, is coupled to a single microwave photon trapped in a superconducting transmission line “cavity.” It has direct analogies with the field of cavity quantum electrodynamics (cavity QED) in quantum optics. Electrons on Helium Electrons on helium form a two dimensional electron gas (2DEG) with exceptional properties including the highest known electron mobility and spin coherence times predicted to exceed 100s. For these reasons one of first quantum computing proposals considered using the vertical motional states of electrons on helium[6], but progress has been slow because of prohibitive (>100 GHz) transition frequencies and difficulty in detection. Quantum memories using electron spins Electrons embedded in the solid-state are ideal quantum memory elements with long coherence times, and are also widely exploited in the contexts of biology and chemistry. We intend to couple a mesoscopic ensemble (106-1012) of electron spins to a superconducting resonator. While the individual spin coupling is small (g~50 Hz), the collective coupling to an ensemble can be large (geff~10 MHz), allowing fast interactions with superconducting qubits. |
