Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Barz, Stefanie"'
Highly entangled quantum states are an ingredient in numerous applications in quantum computing. However, preparing these highly entangled quantum states on currently available quantum computers at high fidelity is limited by ubiquitous errors. Besid
Externí odkaz:
http://arxiv.org/abs/2409.10807
Autor:
Huang, Shiang-Yu, Barz, Stefanie
Inverse design via topology optimization has led to innovations in integrated photonics and offers a promising way for designing high-efficiency on-chip couplers with a minimal footprint. In this work, we exploit topology optimization to design a com
Externí odkaz:
http://arxiv.org/abs/2409.10660
Autor:
Bhatti, Daniel, Barz, Stefanie
One of the most important resources for quantum optical experiments and applications are on-demand highly entangled multiphoton quantum states. A promising way of generating them is heralding entanglement generation at a high rate from letting indepe
Externí odkaz:
http://arxiv.org/abs/2408.08473
Quantum teleportation has proven to be fundamental for many quantum information and communication processes. The core concept can be exploited in many tasks, from the transmission of quantum states, quantum repeaters, to quantum computing. However, f
Externí odkaz:
http://arxiv.org/abs/2406.05182
Publikováno v:
Sci Rep 13, 15428 (2023)
We test the quantumness of IBM's quantum computer IBM Quantum System One in Ehningen, Germany. We generate generalised n-qubit GHZ states and measure Bell inequalities to investigate the n-party entanglement of the GHZ states. The implemented Bell in
Externí odkaz:
http://arxiv.org/abs/2306.03939
Autor:
Bhatti, Daniel, Barz, Stefanie
Publikováno v:
Phys. Rev. A 107, 033714 (2023)
Symmetric multiport splitters are versatile tools in optical quantum information processing. They can be used for studying multiparticle scattering, studying distinguishability and mixedness, and also for the generation of multipartite entangled quan
Externí odkaz:
http://arxiv.org/abs/2302.00697
Publikováno v:
New Journal of Physics 25, 6 (2023)
Multi-photon entanglement plays a central role in optical quantum technologies. One way to entangle two photons is to prepare them in orthogonal internal states, for example, in two polarisations, and then send them through a balanced beam splitter.
Externí odkaz:
http://arxiv.org/abs/2302.00694
Publikováno v:
Science Advances 9, 32 (2023)
Bell-state projections serve as a fundamental basis for most quantum communication and computing protocols today. However, with current Bell-state measurement schemes based on linear optics, only two of four Bell states can be identified, which means
Externí odkaz:
http://arxiv.org/abs/2208.02271
Multipartite entanglement enables secure and anonymous key exchange between multiple parties in a network. In particular Greenberger-Horne-Zeilinger (GHZ) states have been introduced as resource states for anonymous key exchange protocols, in which a
Externí odkaz:
http://arxiv.org/abs/2207.09487
Autor:
Nold, Raphael, Babin, Charles, Schmidt, Joel, Linkewitz, Tobias, Zaballos, María T. Pérez, Stöhr, Rainer, Kolesov, Roman, Vorobyov, Vadim, Lukin, Daniil M., Boppert, Rüdiger, Barz, Stefanie, Vučković, Jelena, Gebhardt, Christof M., Kaiser, Florian, Wrachtrup, Jörg
Publikováno v:
PRX Quantum 3, 020358 (2022)
The ability to perform high-precision optical measurements is paramount to science and engineering. Laser interferometry enables interaction-free sensing with a precision ultimately limited by shot noise. Quantum optical sensors can surpass this limi
Externí odkaz:
http://arxiv.org/abs/2204.12429