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Quantum computers have the potential to revolutionize information technology as we know it by solving certain relevant and interesting problems, using fundamentally fewer resources (number of computational steps) compared with even the fastest supercomputers. While critical aspects of quantum computing are being demonstrated in laboratories across the world, a fully functional and practical quantum...
Quantum computing holds the promise of a novel form of information processing in which data resides in quantum states. By exploiting superpositions and entanglement among these states, quantum logic operations are expected to far surpass conventional digital logic in certain classes of problems. To realize this prospect, we employ superconducting circuits at millikelvin temperatures. The nonlinearity...
Physical implementations of qubits can be extremely sensitive to environmental coupling, which can result in decoherence. While efforts are made for protection, coupling to the environment is necessary to measure and manipulate the state of the qubit. As such, the goal of having long qubit energy relaxation times is in competition with that of achieving high-fidelity qubit control and measurement...
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