Papers

Guang Hao Low, Yuan Su·Oct 23, 2024

Quantum algorithms for linear systems produce the solution state $A^{-1}|b\rangle$ by querying two oracles: $O_A$ that block encodes the coefficient matrix and $O_b$ that prepares the initial state. We present a quantum linear system algorithm making...

Kwok Ho Wan·Oct 23, 2024

We present numerical simulation results for the 7-to-1 and 15-to-1 state distillation circuits, constructed using transversal CNOTs acting on multiple surface code patches. The distillation circuits are decoded iteratively using the method outlined i...

D. Hallett, J. Wiercinski, L. Hallacy +10 more·Oct 23, 2024

We present a novel waveguide design that incorporates a split-diode structure, allowing independent electrical control of transition energies of multiple emitters over a wide range with minimal loss in waveguide coupling efficiency. We use this desig...

Haemanth Velmurugan, Arnav Das, Turbasu Chatterjee +3 more·Oct 23, 2024

Simulating quantum circuits is a computationally intensive task that relies heavily on tensor products and matrix multiplications, which can be inefficient. Recent advancements, eliminate the need for tensor products and matrix multiplications, offer...

Nguyen Van Huynh, Bolun Zhang, Dinh-Hieu Tran +5 more·Oct 23, 2024

Spectrum access is an essential problem in device-to-device (D2D) communications. However, with the recent growth in the number of mobile devices, the wireless spectrum is becoming scarce, resulting in low spectral efficiency for D2D communications. ...

Rodolfo Reis Soldati, D. Dasari, Jörg Wrachtrup +1 more·Oct 23, 2024

Refrigeration limits are of fundamental and practical importance. We here show that quantum systems can be cooled below existing incoherent cooling bounds by employing coherent virtual qubits, even if the amount of coherence is incompletely known. Vi...

Ryoya Igata, Myonsok I, Yuya Seki +2 more·Oct 23, 2024

We investigate the performance of penalty-based quantum annealing (PQA) and constrained quantum annealing (CQA) in solving the graph partitioning problem under various noise models, including depolarizing, bit-flip, and phase-flip noise. We found tha...

Andi Gu, Yihui Quek, Susanne F. Yelin +2 more·Oct 23, 2024

Quantum chaos is a quantum many-body phenomenon that is associated with a number of intricate properties, such as level repulsion in energy spectra or distinct scalings of out-of-time ordered correlation functions. In this work, we introduce a novel ...

Abhiram Sripat·Oct 23, 2024

Mycorrhizal fungi form vast subterranean networks that are critical for plant nutrient uptake, carbon sequestration, and ecosystem resilience. Despite their ecological importance, optimizing these networks for precision agriculture, forestry,and carb...

T. Huckemann, Pascal Muster, W. Langheinrich +8 more·Oct 22, 2024

This letter reports the compatibility of heterostructure-based spin qubit devices with industrial CMOS technology. It features Si/Si-Ge quantum dot devices fabricated using Infineon’s 200mm production line within a restricted thermal budget. The devi...

Lingzhen Guo, Tangyou Huang, Lei Du·Oct 22, 2024

Bosonic codes offer a hardware-efficient approach to encoding and protecting quantum information with a single continuous-variable bosonic system. However, previous quantum gates lack analytical methods for decomposing quantum circuits and require co...

Haoqian Pan, Changhong Lu·Oct 22, 2024

In the wake of quantum computing advancements and quantum algorithmic progress, quantum algorithms are increasingly being employed to address a myriad of combinatorial optimization problems. Among these, the Independent Domination Problem (IDP), a de...

Langxuan Chen, Pengfei Zhang·Oct 22, 2024

Remarkable breakthroughs in quantum science and technology are demanding for more efficient methods in analyzing quantum many-body states. A significant challenge in this field is to verify whether a quantum state prepared by quantum devices in the l...

Stefan Trandafir, A. Cabello·Oct 22, 2024

Bipartite perfect quantum strategies (BPQSs) allow two players isolated from each other to win every trial of a nonlocal game. BPQSs have crucial roles in recent developments in quantum information and quantum computation. However, only few BPQSs wit...

Daniel Hothem, Jordan Hines, Charles Baldwin +3 more·Oct 22, 2024

High-fidelity mid-circuit measurements, which read out the state of specific qubits in a multiqubit processor without destroying them or disrupting their neighbors, are a critical component for useful quantum computing. They enable fault-tolerant qua...

Chusei Kiumi, Bálint Koczor·Oct 22, 2024

Simulating time evolution under quantum Hamiltonians is one of the most natural applications of quantum computers. We introduce TE-PAI, which simulates time evolution exactly by sampling random quantum circuits for the purpose of estimating observabl...

Jiaxuan Zhang, Zhao-Yun Chen, Jia-Ning Li +6 more·Oct 22, 2024

Large-scale quantum computation requires to be performed in the fault-tolerant manner. One crucial challenge of fault-tolerant quantum computing (FTQC) is reducing the overhead of implementing logical gates. Recently work proposed correlated decoding...

Gereon Koßmann, Mark M. Wilde·Oct 21, 2024

This paper introduces a method for calculating the quantum relative entropy of channels, an essential quantity in quantum channel discrimination and resource theories of quantum channels. By building on recent developments in the optimization of rela...

Marco Tesoro, Ilaria Siloi, Daniel Jaschke +2 more·Oct 21, 2024

Classical public-key cryptography standards rely on the Rivest-Shamir-Adleman (RSA) encryption protocol. The security of this protocol is based on the exponential computational complexity of the most efficient classical algorithms for factoring large...

Harikrishnan K J, Amit Kumar Pal·Oct 21, 2024

We propose a scalable and deterministic protocol for growing large multi-qubit states starting from two-qubit non-maximally entangled pure states, where the bipartite entanglement in the resultant state is higher than the maximum of the available ent...