Accurate and efficient quantum Gibbs state preparation

Time：Thur., 13:30-14:30, Dec. 26, 2024

Venue：B626, Shuangqing Complex Building A

Organizer：Jin-Peng Liu

Speaker：Weiliang Wang

Organizer

Jin-Peng Liu 刘锦鹏

Speaker

Weiliang Wang

Time

Thur., 13:30-14:30, Dec. 26, 2024

Venue

B626, Shuangqing Complex Building A

Accurate and efficient quantum Gibbs state preparation

Abstract：

Preparing Gibbs state on quantum computer is an essential task for quantum algorithm, which is believed to be one of the natural candidates for quantum advantage. Efforts to generalize classical gibbs sampler to quantum come to a remarkable result, the first implementable quantum Gibbs sampler recently[CKBG23][CKG23]. The speaker will review these works, together with [JI24] which provides an alternative Gibbs sampler.

References:

[CKBG23] Quantum Thermal State Preparation. Chi-Fang Chen, Michael J. Kastoryano, Fernando G.S.L. Brandão, and András Gilyén.

[CKG23] An efficient and exact noncommutative quantum Gibbs sampler Chi-Fang Chen, Michael J. Kastoryano, and András Gilyén.

[JI24] Quantum Metropolis Sampling via Weak Measurement. Jiaqing Jiang and Sandy Irani.

Speaker:

Jingyao Wang is an undergraduate at Yao Class, Tsinghua University.

DATEDecember 26, 2024

Related News

0
Asymptotically Optimal Circuit Depth for Quantum State Preparation and General Unitary Synthesis
AbstractThe Quantum State Preparation problem aims to prepare an $n$-qubit quantum state $|\psi_v\rangle =\sum_{k=0}^{2^n-1}v_k|k\rangle$ from {the} initial state $|0\rangle^{\otimes n}$, for a given unit vector $v=(v_0,v_1,v_2,\ldots,v_{2^n-1})^T\in \mathbb{C}^{2^n}$ with $\|v\|_2 = 1$. The problem is of fundamental importance in quantum algorithm design, Hamiltonian simulation and quantum mac...
1
Efficient Gibbs Sampler and Its Optimal Transport Approach
Quantum Scientific Computation and Quantum Artificial IntelligenceOrganizers：Jin-Peng Liu 刘锦鹏 (YMSC)Speaker：Weiliang Wang (Tsinghua University)Time：Wed., 10:30-11:30, Nov 19, 2025Venue：Ningzhai 104Online：腾讯会议/Voov: 963-193-309Title：Efficient Gibbs Sampler and Its Optimal Transport ApproachAbstract:Since the breakthrough work on efficient Gibbs samplers [CKBG23], significant progres...