Tensor Networks | Ueda Group

High-Precision Variational Quantum SVD via Classical Orthogonality Correction

Sat, 09 May 2026 00:00:00 +0000

New arXiv Paper by Miyakoshi et al.

Sat, 09 May 2026 00:00:00 +0000

A new paper by Shohei Miyakoshi, Takanori Sugimoto, Tomonori Shirakawa, Seiji Yunoki, and Hiroshi Ueda has been posted on arXiv.

Title: “High-Precision Variational Quantum SVD via Classical Orthogonality Correction”

The work proposes a hybrid quantum-classical framework for variational singular value decomposition and entanglement spectrum estimation based on tensor-network-inspired approaches.

Invited Talk at the 14th Workshop on Quantum Many-Body Computation

Fri, 17 Apr 2026 00:00:00 +0000

Hiroshi Ueda delivered an invited talk at the 14th Workshop on Quantum Many-Body Computation held in Beijing, China, from April 10 to 12, 2026.

Title of the talk:

“Variational Quantum Partial SVD with Orthogonality Correction: High-Precision Entanglement Spectra from Shallow Circuits”

The presentation introduced recent developments in hybrid quantum-classical algorithms for entanglement spectrum estimation, variational quantum singular value decomposition, and tensor-network-inspired quantum computation.

The workshop also provided opportunities for discussions on quantum algorithms, tensor networks, and future international collaborations.

TTNOpt: Tree tensor network package for high-rank tensor compression

Thu, 01 Jan 2026 00:00:00 +0000

Improving the accuracy of the tree-tensor network approach by optimization of network structure

Thu, 16 Oct 2025 00:00:00 +0000

Automatic quantum circuit encoding of a given arbitrary quantum state

Thu, 03 Oct 2024 00:00:00 +0000

Automatic Structural Search of Tensor Network States including Entanglement Renormalization

Fri, 06 Sep 2024 00:00:00 +0000

Variational quantum eigensolver with embedded entanglement using a tensor-network ansatz

Tue, 02 Apr 2024 00:00:00 +0000

Visualization of Entanglement Geometry by Structural Optimization of Tree Tensor Network

Mon, 29 Jan 2024 00:00:00 +0000

Extracting a function encoded in amplitudes of a quantum state by tensor network and orthogonal function expansion

Wed, 07 Jun 2023 00:00:00 +0000

Entanglement bipartitioning and tree tensor networks

Sat, 28 Jan 2023 00:00:00 +0000

Automatic structural optimization of tree tensor networks

Mon, 23 Jan 2023 00:00:00 +0000

Developments in the Tensor Network — from Statistical Mechanics to Quantum Entanglement

Mon, 02 May 2022 00:00:00 +0000

Doubling of entanglement spectrum in tensor renormalization group

Sat, 01 Feb 2014 00:00:00 +0000

Entanglement Entropy and Energy Accuracy: Tensor Networks for Small Spin-Systems

Sat, 01 Dec 2012 00:00:00 +0000

Quantum Entanglement of Tensor Networks with Symmetry Projections

Sun, 01 Apr 2012 00:00:00 +0000