Nitish Kumar Chandra, Eneet Kaur, Kaushik P. Seshadreesan • Published: 2025-11-17
Realizing distributed architectures for quantum computing is crucial to scaling up computational power. A key component of such architectures is a scheduler that coordinates operations over a short-range quantum network required to enable the necessary non-local entangling gates between quantum processing units (QPUs). It is desirable to determine schedules of minimum make span, which in the case ...
Nitish Kumar Chandra, Eneet Kaur, Kaushik P. Seshadreesan • Published: 2025-11-17
Fault tolerant quantum computation over distributed quantum computing (DQC) platforms requires careful evaluation of resource requirements and noise thresholds. As quantum hardware advances toward modular and networked architectures, various fault tolerant DQC schemes have been proposed, which can be broadly categorized into three architectural types. Type 1 architectures consist of small quantum ...
Stefano Veroni, Alexandru Paler, Giacomo Giudice • Published: 2024-12-19
We show that universal quantum computation can be concretely made fault-tolerant without mid-circuit measurements. To this end, we introduce a measurement-free deformation protocol of the Bacon-Shor code to realize a logical $\mathit{CCZ}$ gate. Combined with a fold-transversal logical Hadamard gate, this enables a universal set of fault-tolerant operations using only transversal gates and qubit p...
Gongchu Li, Lei Chen, Si-Qi Zhang, Xu-Song Hong, Huaqing Xu, Yuancheng Liu, You Zhou, Geng Chen, Chuan-Feng Li, Alioscia Hamma, Guang-Can Guo • Published: 2024-08-04
Magic states and magic gates are crucial for achieving universal quantum computation, but important questions about how magic resources should be implemented to attain maximal quantum advantage have remained unexplored, especially in the context of measurement-based quantum computation (MQC). This work bridges the gap between MQC and the resource theory of magic by introducing the key concepts of ...
Laszlo B. Kish • Published: 2025-11-16
Exponential parallelism, a defining principle of advanced computational systems, holds promise for transformative impacts across several scientific and industrial domains. This feature paper provides a comparative overview of Quantum Computing (QC) and Instantaneous Noise-based Logic (INBL), focusing on their practical strengths, limitations, and applications rather than exhaustive technical depth...
Fabio Cumbo, Rui-Hao Li, Bryan Raubenolt, Jayadev Joshi, Abu Kaisar Mohammad Masum, Sercan Aygun, Daniel Blankenberg • Published: 2025-11-16
A significant challenge in quantum computing (QC) is developing learning models that truly align with quantum principles, as many current approaches are complex adaptations of classical frameworks. In this work, we introduce Quantum Hyperdimensional Computing (QHDC), a fundamentally new paradigm. We demonstrate that the core operations of its classical counterpart, Hyperdimensional Computing (HDC)...
Vanessa Brzić, Satoshi Yoshida, Mio Murao, Marco Túlio Quintino • Published: 2025-10-23
In higher-order quantum computing (HOQC), one typically considers the universal transformation of unknown quantum operations, treated as blackboxes. It is also implicitly assumed that the resulting operation must act on arbitrary, and thus unknown, input states. In this work, we explore a variant of this framework in which the operation remains unknown, but the input state is fixed and known. We a...
Zack Hassman, Oliver Reardon-Smith, Gokul Subramanian Ravi, Frederic T. Chong, Kevin J. Sung • Published: 2025-11-16
We present and open source a simulator for circuits composed of passive fermionic linear optical elements and controlled-phase gates. Given such a circuit, our simulator can compute Born-rule probabilities for samples drawn from it. Our simulator supports both exact and approximate probability calculation, allowing users to trade accuracy for efficiency as needed. For approximate Born-rule probabi...
Hiroki Ohta, Aaron Merlin Müller, Shunji Tsuchiya • Published: 2025-11-15
We demonstrate that the ground state of a spin-1 XXZ chain with uniaxial anisotropies, single-ion anisotropy $D$ and Ising anisotropy $J$, within the Haldane phase can serve as a resource state for measurement-based quantum computation implementing single-qubit gates. The gate fidelity of both elementary rotation gates and general single-qubit unitary gates composed of rotations about the $x$-, $y...
Andrei A. Stepanenko, Kseniia S. Chernova, Maxim A. Gorlach • Published: 2025-11-14
We present an approach to compute time-optimal control of a quantum system which combines quantum brachistochrone and Lax pair techniques and enables efficient investigation of large-scale quantum systems. We illustrate our method by finding the fastest way to transfer a single-particle excitation in a nearest-neighbor-coupled infinitely large qubit lattice with the fixed sum of squares of the cou...