# Quantum Computing

## Quantum computing review

• Quantum Computing for Computer Scientists video
• Alexandre Blais - Quantum Computing with Superconducting Qubits - CSSQI 2012 video1 video2
• Quantum Computing & the Entanglement - John Preskill video

• Berkeley course “Quantum Mechanics and Quantum Computation” video lecture series by Professor Umesh Vazirani playlist

## Quantum algorithms

• Small quantum fourier transforms, QuTech Academy video
• Hacking at quantum speed with Shor’s Algorithm, Infinite Series video

## Quantum computing hardwares

• Maintaining coherence in quantum computers by W. G. Unruch (1995)
• M. Suchara et. al. arXiv:1312.2316 (2013)
• T2 times: coherence times of superconducting qubits
• Near-Term: Noisy Intermediate Scale Quantum Computing (NISQ), maybe ~100 qubits available, Preskil
• Noisy devices without full error correction, ~100qubits, decoherence, gate errors, measurement errors…
• algorithms need to be designed with noisy hardware in mind
• possible approach: short-depth circuits
• how could we deal with decoherence? PRL 119, 180509 (2017)
• quality is not abruptly degraded. It’s smooth. can be make the forgetting curve better like 1-exp(-x) ?
• probabilistic error cancellation, zero noise extrapolation

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