With the Gottesman-Kitaev-Preskill (GKP) encoding, Clifford gates and error correction can be carried out using simple Gaussian operations. Still, non-Clifford gates, required for universality, require non-Gaussian elements. In their original proposal, GKP suggested a particularly method of single application cubic phase gate to perform logical $T$ gate. Here we show that this approach performs...

Abstract Storing quantum information in a error correction code can protect it from errors, but the ability to transform stored fault tolerant way is equally important. Logical Pauli group operators be implemented on Calderbank-Shor-Steane (CSS) codes, commonly-studied category of by applying series physical X and Z gates. this form are fault-tolerant because each qubit acted upon at most one g...

We describe an extension of single-qubit gate randomized benchmarking that measures the error of multiqubit gates in a quantum information processor. This platform-independent protocol evaluates the performance of Clifford unitaries, which form a basis of fault-tolerant quantum computing. We implemented the benchmarking protocol with trapped ions and found an error per random two-qubit Clifford...

Quantum computation provides great speedup over its classical counterpart for certain problems. One of the key challenges for quantum computation is to realize precise control of the quantum system in the presence of noise. Control of the spin-qubits in solids with the accuracy required by fault-tolerant quantum computation under ambient conditions remains elusive. Here, we quantitatively chara...

Twisted rapid passage is a type of non-adiabatic rapid passage that gives rise to controllable quantum interference effects that were first observed experimentally in 2003. We show that twisted rapid passage sweeps can be used to implement a universal set of quantum gates that operate with high-fidelity. For each gate in the universal set, sweep parameter values are provided which simulations i...

SLAC National Accelerator Laboratory is developing a next generation H-bridge switch plate [1], a critical component of the SNS High Voltage Converter Modulator [2]. As part of that effort, a new IGBT gate driver has been developed. The drivers are an integral part of the switch plate, which are essential to ensuring fault-tolerant, high-performance operation of the modulator. The redesigned dr...

Quantum computation has demonstrated advantages over classical for special hard problems, where a set of universal quantum gates is essential. Geometric phases, which have built-in resilience to local noise, been used construct with excellent performance. However, this advantage smeared in previous schemes. Here, we propose state-independent nonadiabatic geometric quantum-gate scheme that able ...

We demonstrate the quantum mean estimation algorithm on Euclidean lattice field theories. This shows a quadratic advantage over Monte Carlo methods which persists even in presence of sign problem, and is insensitive to critical slowing down. The used compute $\pi$ with without toy U(1) gauge theory model, Ising model. effect $R_{Z}$-gate synthesis errors future fault-tolerant computer investiga...

Dynamically and partially reconfigurable FieldProgrammable Gate Arrays (FPGAs) open the doors for new more advanced fault-tolerance techniques. This technology permits indeed to adjust at runtime the architecture of the system in order to keep it fault-free at every time. We present a tailored Genetic Algorithm (GA) aimed at online searching a fault-tolerant architecture for the system in terms...

Increasing vulnerability of transistors and interconnects due to scaling is continuously challenging the reliability of future microprocessors. Lifetime reliability is gaining attention over performance as a design factor even for lower-end commodity applications. In this work we present a low-power hybrid fault tolerant architecture for reliability improvement of pipelined microprocessors by p...