38 citations · 266 across the 19 of their papers we have counts for
15 papers · 1 filter
Witnessing entanglement in trapped-ion quantum error correction under realistic noise
Andrea Rodriguez-Blanco, Farid Shahandeh, Alejandro Bermudez
Quantum Error Correction (QEC) exploits redundancy by encoding logical information into multiple physical qubits. In current implementations of QEC, sequences of non-perfect two-qu…
Quantum computational advantage implies contextuality
Farid Shahandeh
We show that a separation between the class of all problems that can efficiently be solved on a quantum computer and those solvable using probabilistic classical algorithms in poly…
Efficient and robust certification of genuine multipartite entanglement in noisy quantum error correction circuits
Andrea Rodriguez-Blanco, Alejandro Bermudez, Markus Müller +1
Ensuring the correct functioning of quantum error correction (QEC) circuits is crucial to achieve fault tolerance in realistic quantum processors subjected to noise. The first chec…
Contextuality of general probabilistic theories
Farid Shahandeh
Generalized contextuality refers to our inability of explaining measurement statistics using a context-independent probabilistic and ontological model. On the other hand, measureme…
Assisted Macroscopic Quantumness
Farid Shahandeh, Martin Ringbauer, Massimiliano Proietti +8
It is commonly expected that quantum theory is universal, in that it describes the world at all scales. Yet, quantum effects at the macroscopic scale continue to elude our experime…
Optomechanical state reconstruction and nonclassicality verification beyond the resolved-sideband regime
Farid Shahandeh, Martin Ringbauer
Quantum optomechanics uses optical means to generate and manipulate quantum states of motion of mechanical resonators. This provides an intriguing platform for the study of fundame…
Quantum Correlations and Global Coherence in Distributed Quantum Computing
Farid Shahandeh, Austin P. Lund, Timothy C. Ralph
Deviations from classical physics when distant quantum systems become correlated are interesting both fundamentally and operationally. There exist situations where the correlations…
Quantum Correlations in Nonlocal BosonSampling
Farid Shahandeh, Austin P. Lund, Timothy C. Ralph
Determination of the quantum nature of correlations between two spatially separated systems plays a crucial role in quantum information science. Of particular interest is the quest…
Ultrafine Entanglement Witnessing
Farid Shahandeh, Martin Ringbauer, Juan C. Loredo +1
Entanglement witnesses are invaluable for efficient quantum entanglement certification without the need for expensive quantum state tomography. Yet, standard entanglement witnessin…
Measurement-Device-Independent Approach to Entanglement Measures
Farid Shahandeh, Michael J. W. Hall, Timothy C. Ralph
Within the context of semiquantum nonlocal games, the trust can be removed from the measurement devices in an entanglement-detection procedure. Here we show that a similar approach…
Arbitrary Multi-Qubit Generation
Farid Shahandeh, Austin P. Lund, Timothy C. Ralph +1
We propose and analyse a scheme for single-rail-encoded arbitrary multi-qubit quantum-state generation to provide a versatile tool for quantum optics and quantum information applic…
Entanglement and nonclassicality: A mutual impression
H. Gholipour, F. Shahandeh
We find a sufficient condition to imprint the single-mode bosonic phase-space nonclassicality onto a bipartite state as modal entanglement and vice versa using an arbitrary beam sp…
Structural Quantification of Entanglement
F. Shahandeh, J. Sperling, W. Vogel
We introduce an approach which allows a detailed structural and quantitative analysis of multipartite entanglement. The sets of states with different structures are convex and nest…
Operational Gaussian Schmidt-Number Witnesses
Farid Shahandeh, Jan Sperling, Werner Vogel
The general class of Gaussian Schmidt-number witness operators for bipartite systems is studied. It is shown that any member of this class is reducible to a convex combination of t…
A New Theorem on the Nonclassicality of States
F. Shähandeh, M. R. Bazrafkan
A new theorem on the non-classicality depth of states has been proved. We show that if exist for some value of the ordering parameter at some phase-spa…