116 citations · 554 across the 17 of their papers we have counts for
17 papers
Almost qudits in the prepare-and-measure scenario
Jef Pauwels, Stefano Pironio, Erik Woodhead +1
Quantum communication is often investigated in scenarios where only the dimension of Hilbert space is known. However, assigning a precise dimension is often an approximation of wha…
Entanglement in prepare-and-measure scenarios: many questions, a few answers
Jef Pauwels, Armin Tavakoli, Erik Woodhead +1
Entanglement and quantum communication are paradigmatic resources in quantum information science leading to correlations between systems that have no classical analogue. Correlatio…
Simple and practical DIQKD security analysis via BB84-type uncertainty relations and Pauli correlation constraints
Michele Masini, Stefano Pironio, Erik Woodhead
According to the entropy accumulation theorem, proving the unconditional security of a device-independent quantum key distribution protocol reduces to deriving tradeoff functions,…
Correlations in entanglement-assisted prepare-and-measure scenarios
Armin Tavakoli, Jef Pauwels, Erik Woodhead +1
We investigate the correlations that can arise between Alice and Bob in prepare-and-measure communication scenarios where the source (Alice) and the measurement device (Bob) can sh…
Device-independent quantum key distribution with asymmetric CHSH inequalities
Erik Woodhead, Antonio Acín, Stefano Pironio
The simplest device-independent quantum key distribution protocol is based on the Clauser-Horne-Shimony-Holt (CHSH) Bell inequality and allows two users, Alice and Bob, to generate…
Informationally restricted correlations: a general framework for classical and quantum systems
Armin Tavakoli, Emmanuel Zambrini Cruzeiro, Erik Woodhead +1
We introduce new methods and tools to study and characterise classical and quantum correlations emerging from prepare-and-measure experiments with informationally restricted commun…
Device-independent tests of structures of measurement incompatibility
Marco Túlio Quintino, Costantino Budroni, Erik Woodhead +2
In contrast with classical physics, in quantum physics some sets of measurements are incompatible in the sense that they can not be performed simultaneously. Among other applicatio…
Maximal randomness from partially entangled states
Erik Woodhead, Jędrzej Kaniewski, Boris Bourdoncle +4
We investigate how much randomness can be extracted from a generic partially entangled pure state of two qubits in a device-independent setting, where a Bell test is used to certif…
Randomness versus nonlocality in the Mermin-Bell experiment with three parties
Erik Woodhead, Boris Bourdoncle, Antonio Acín
The detection of nonlocal correlations in a Bell experiment implies almost by definition some intrinsic randomness in the measurement outcomes. For given correlations, or for a giv…
Semi-device-independent framework based on natural physical assumptions
Thomas Van Himbeeck, Erik Woodhead, Nicolas J. Cerf +2
The semi-device-independent approach provides a framework for prepare-and-measure quantum protocols using devices whose behavior must not be characterized nor trusted, except for a…
Semi device independence of the BB84 protocol
Erik Woodhead
The BB84 quantum key distribution protocol is semi device independent in the sense that it can be shown to be secure if just one of the users' devices is restricted to a qubit Hilb…
Secrecy in prepare-and-measure CHSH tests with a qubit bound
Erik Woodhead, Stefano Pironio
The security of device-independent (DI) quantum key distribution (QKD) protocols relies on the violation of Bell inequalities. As such, their security can be established based on m…
Tight asymptotic key rate for the BB84 protocol with local randomisation and device imprecisions
Erik Woodhead
Local randomisation is a preprocessing procedure in which one of the legitimate parties of a quantum key distribution (QKD) scheme adds noise to their version of the key and was fo…
Creating and manipulating entangled optical qubits in the frequency domain
Laurent Olislager, Erik Woodhead, Kien Phan Huy +3
Radio-frequency phase modulation of frequency entangled photons leads to a two-photon interference pattern in the frequency domain. In recent experiments, the pattern was measured…
A quantum cloning bound and application to quantum key distribution
Erik Woodhead
We introduce a quantum cloning bound which we apply to a straightforward and relatively direct security proof of the prepare-and-measure Bennett-Brassard 1984 (BB84) quantum key di…
Effects of preparation and measurement misalignments on the security of the BB84 quantum key distribution protocol
Erik Woodhead, Stefano Pironio
The ideal Bennett-Brassard 1984 (BB84) quantum key distribution protocol is based on the preparation and measurement of qubits in two alternative bases differing by an angle of pi/…
Implementing two-photon interference in the frequency domain with electro-optic phase modulators
Laurent Olislager, Ismaël Mbodji, Erik Woodhead +6
Frequency-entangled photons can be readily produced using parametric down-conversion. We have recently shown how such entanglement could be manipulated and measured using electro-o…