Realization of Gapped and Ungapped Photonic Topological Anderson Insulators

M Ren, Y Yu, B Wu, X Qi, Y Wang, X Yao, J Ren… - Physical Review Letters, 2024 - APS
It is commonly believed that topologically nontrivial one-dimensional systems support edge
states rather than bulk states at zero energy. In this work, we find an unanticipated case of …

Photonic quantum walk with ultrafast time-bin encoding

KL Fenwick, F Bouchard, GS Thekkadath, D England… - Optica, 2024 - opg.optica.org
The quantum walk (QW) has proven to be a valuable testbed for fundamental inquiries in
quantum technology applications such as quantum simulation and quantum search …

Dynamic conditioning of two particle discrete-time quantum walks

F Pegoraro, P Held, S Barkhofen, B Brecht… - Physica …, 2023 - iopscience.iop.org
In real photonic quantum systems losses are an unavoidable factor limiting the scalability to
many modes and particles, restraining their application in fields as quantum information and …

Simulation of quantum walks on a circle with polar molecules via optimal control

YK Ding, ZY Zhang, JM Liu - The Journal of Chemical Physics, 2023 - pubs.aip.org
Quantum walks are the quantum counterpart of classical random walks and have various
applications in quantum information science. Polar molecules have rich internal energy …

Local topological switch for boundary states in quantum walks

X Zhan, Y Yu, P Xue - Physical Review A, 2024 - APS
Localization is a critical phenomenon in quantum walks that has attracted much attention in
quantum simulations. In this paper, we present a unified framework for investigating the …

Measurement-Based Quantum Walks on High-Dimensional Graphs

S De, V Ansari, J Sperling, S Barkhofen… - arXiv preprint arXiv …, 2022 - arxiv.org
Quantum walks (QWs) on high-dimensional and reconfigurable graphs can invoke the full
potential of quantum simulation and information processing tasks. However, experimental …

Multiphoton interference in a single-spatial-mode quantum walk

KL Fenwick, J Baker, GS Thekkadath… - arXiv preprint arXiv …, 2024 - arxiv.org
Multiphoton interference is crucial to many photonic quantum technologies. In particular,
interference forms the basis of optical quantum information processing platforms and can …

Experimental observation of topological quantum criticality

S Barkhofen, S De, J Sperling, C Silberhorn… - Physical Review …, 2024 - APS
We report on a photonic simulator of the critical state forming at the quantum phase
transition between topologically distinct Anderson insulator phases. We observe a time …

Response to glassy disorder in coin on spread of quantum walker

P Ghosh, K Sen, U Sen - arXiv preprint arXiv:2111.09827, 2021 - arxiv.org
We analyze the response to incorporation of glassy disorder in the coin operation of a
discrete-time quantum walk in one dimension. We find that the ballistic spread of the …

Topological anderson localization transition in time-multiplexed quantum walks

S De, D Bagrets, KW Kim, S Barkhofen… - European Quantum …, 2021 - opg.optica.org
Topological Anderson Localization Transition in Time-Multiplexed Quantum Walks References
Page 1 ec_4_2.pdf CLEO Europe and EQEC 2021 Topological Anderson Localization …