



02469nas a2200217   4500008004100000245001900041210001900060260001400079520185900093653003401952653004301986653002702029653003102056100002602087700001902113700001702132700002502149700002202174700001802196856003702214       2022                        eng d00aBosonic Qiskit0 aBosonic Qiskit  c9/22/20223 a<p>The practical benefits of hybrid quantum information processing hardware that contains continuous-variable objects (bosonic modes such as mechanical or electromagnetic oscillators) in addition to traditional (discrete-variable) qubits have recently been demonstrated by experiments with bosonic codes that reach the break-even point for quantum error correction and by efficient Gaussian boson sampling simulation of the Franck-Condon spectra of triatomic molecules that is well beyond the capabilities of current qubit-only hardware. The goal of this Co-design Center for Quantum Advantage (C2QA) project is to develop an instruction set architecture (ISA) for hybrid qubit/bosonic mode systems that contains an inventory of the fundamental operations and measurements that are possible in such hardware. The corresponding abstract machine model (AMM) would also contain a description of the appropriate error models associated with the gates, measurements and time evolution of the hardware. This information has been implemented as an extension of Qiskit. Qiskit is an opensource software development toolkit (SDK) for simulating the quantum state of a quantum circuit on a system with Python 3.7+ and for running the same circuits on prototype hardware within the IBM Quantum Lab. We introduce the Bosonic Qiskit software to enable the simulation of hybrid qubit/bosonic systems using the existing Qiskit software development kit. This implementation can be used for simulating new hybrid systems, verifying proposed physical systems, and modeling systems larger than can currently be constructed. We also cover tutorials and example use cases included within the software to study Jaynes- Cummings models, bosonic Hubbard models, plotting Wigner functions and animations, and calculating maximum likelihood estimations using Wigner functions.</p>10aEmerging Technologies (cs.ET)10aFOS: Computer and information sciences10aFOS: Physical sciences10aQuantum Physics (quant-ph)1 aStavenger, Timothy, J1 aCrane, Eleanor1 aSmith, Kevin1 aKang, Christopher, T1 aGirvin, Steven, M1 aWiebe, Nathan  uhttps://arxiv.org/abs/2209.1115301505nas a2200205   4500008004100000245006200041210006100103260001500164520083500179653003801014653003401052653004301086653002701129653003101156100002301187700001701210700001701227700001801244856003701262       2022                        eng d00aLattice-Based Quantum Advantage from Rotated Measurements0 aLatticeBased Quantum Advantage from Rotated Measurements  c10/18/20223 a<p>Trapdoor claw-free functions (TCFs) are immensely valuable in cryptographic interactions between a classical client and a quantum server. Typically, a protocol has the quantum server prepare a superposition of two-bit strings of a claw and then measure it using Pauli-X or Z measurements. In this paper, we demonstrate a new technique that uses the entire range of qubit measurements from the XY-plane. We show the advantage of this approach in two applications. First, building on (Brakerski et al. 2018, Kalai et al. 2022), we show an optimized two-round proof of quantumness whose security can be expressed directly in terms of the hardness of the LWE (learning with errors) problem. Second, we construct a one-round protocol for blind remote preparation of an arbitrary state on the XY-plane up to a Pauli-Z correction.</p>10aCryptography and Security (cs.CR)10aEmerging Technologies (cs.ET)10aFOS: Computer and information sciences10aFOS: Physical sciences10aQuantum Physics (quant-ph)1 aAlnawakhtha, Yusuf1 aMantri, Atul1 aMiller, Carl1 aWang, Daochen  uhttps://arxiv.org/abs/2210.10143