Category: Paper

Timon Scheiber, Paul Haubenwallner, and Matthias Heller,

Quantum 9, 1840 (2025).

Quantum error mitigation is regarded as a possible path to near-term quantum utility. The methods under the quantum error mitigation umbrella term, such as probabilistic error cancellation (…

Xiaoyu Liu, Benjamin F. Schiffer, and Jordi Tura,

Quantum 9, 1838 (2025).

Quantum computers are a highly promising tool for efficiently simulating quantum many-body systems. The preparation of their eigenstates is of particular interest and can be addressed, e.g.,…

Olga Leskovjanová and Ladislav Mišta Jr.,

Quantum 9, 1837 (2025).

We derive a set of genuine multi-mode entanglement criteria for second moments of the quadrature operators. The criteria have a common form of the uncertainty relation between sums of varian…

Yizhi Shen, Daan Camps, Aaron Szasz, Siva Darbha, Katherine Klymko, David B. Williams–Young, Norm M. Tubman, and Roel Van Beeumen,

Quantum 9, 1836 (2025).

Ground state energy estimation in physical, chemical, and materials sciences is one of the most promising applications of quantum computing. In this work, we introduce a new hybrid approach…

Federico Girotti, Alfred Godley, and Madalin Guta,

Quantum 9, 1835 (2025).

We propose a two step strategy for estimating one-dimensional dynamical parameters of a quantum Markov chain, which involves quantum post-processing the output using a coherent quantum absor…

John M. Martyn, Zane M. Rossi, Kevin Z. Cheng, Yuan Liu, and Isaac L. Chuang,

Quantum 9, 1834 (2025).

Quantum signal processing (QSP) is a methodology for constructing polynomial transformations of a linear operator encoded in a unitary. Applied to an encoding of a state $\rho$, QSP enables th…

Isabel Nha Minh Le, Shuo Sun, and Christian B. Mendl,

Quantum 9, 1833 (2025).

We significantly enhance the simulation accuracy of initial Trotter circuits for Hamiltonian simulation of quantum systems by integrating first-order Riemannian optimization with tensor netw…

Myeongjin Shin, Junseo Lee, Seungwoo Lee, and Kabgyun Jeong,

Quantum 9, 1832 (2025).

Estimating the trace of quantum state powers, $\text{Tr}(\rho^k)$, for $k$ identical quantum states is a fundamental task with numerous applications in quantum information processing, including…

Zijian Song and Guanyu Zhu,

Quantum 9, 1831 (2025).

We investigate boundaries of 3D color codes and provide a systematic classification into 101 distinct boundary types, including two novel classes. The first class consists of 1 boundary and…

Edwin Tham and Nicolas Delfosse,

Quantum 9, 1829 (2025).

We propose several optimizations of the CliNR partial error correction scheme which implements Clifford circuits by consuming a resource state. Errors are corrected by measuring a sequence o…

John van de Wetering, Richie Yeung, Tuomas Laakkonen, and Aleks Kissinger,

Quantum 9, 1828 (2025).

Parametrised quantum circuits contain phase gates whose phase is determined by a classical algorithm prior to running the circuit on a quantum device. Such circuits are used in variational a…

Jerzy Paczos, Joshua Foo, and Magdalena Zych,

Quantum 9, 1827 (2025).

We propose an experimental setup to probe the interplay between the quantum superposition principle and gravitational time dilation arising from the mass-energy equivalence. It capitalizes o…

Matthew Steinberg, Junyu Fan, Robert J. Harris, David Elkouss, Sebastian Feld, and Alexander Jahn,

Quantum 9, 1826 (2025).

We introduce a new class of qubit codes that we call Evenbly codes, building on a previous proposal of hyperinvariant tensor networks. Its tensor network description consists of local, non-p…

Jan Nöller, Nikolai Miklin, Martin Kliesch, and Mariami Gachechiladze,

Quantum 9, 1825 (2025).

The rapid advancement of quantum hardware necessitates the development of reliable methods to certify its correct functioning. However, existing certification tests fall short, as they eithe…