Quantum Inf Process (2016) 15:913–927
Quantum teleportation between a single-rail
single-photon qubit and a coherent-state qubit using
hybrid entanglement under decoherence effects
· Seunglee Bae
Received: 26 June 2015 / Accepted: 13 November 2015 / Published online: 26 November 2015
© Springer Science+Business Media New York 2015
Abstract We study quantum teleportation between two different types of optical
qubits using hybrid entanglement as a quantum channel under decoherence effects.
One type of qubit employs the vacuum and single-photon states for the basis, called a
single-rail single-photon qubit, and the other utilizes coherent states of opposite phases.
We ﬁnd that teleportation from a single-rail single-photon qubit to a coherent-state
qubit is better than the opposite direction in terms of ﬁdelity and success probability.
We compare our results with those using a different type of hybrid entanglement
between a polarized single-photon qubit and a coherent state.
Keywords Quantum teleportation · Quantum information processing · Optical
There are a number of possible approaches based on optical systems to quantum
information processing. A well-known method is to use single photons as quantum
information carriers. In this type of method, quantum information is encoded in the
polarization degree of freedom of a single photon [1,2], or alternatively, presence
and absence of a single photon are used for qubit encoding [3,4]. Another possible
method utilizes coherent states with opposite phases as a qubit basis [5–10]. Both the
approaches have their own advantages and disadvantages for quantum information
processing [11–14]. One notable merit of the method based on coherent states is
Department of Physics and Astronomy, Center for Macroscopic Quantum Control,
Seoul National University, Seoul 151-742, Korea