Quantum Inf Process (2011) 10:719–720
Qubit from the editor
Received: 26 August 2011 / Published online: 21 September 2011
© Springer Science+Business Media, LLC 2011
When Howard Brandt approached me and suggested that I act as guest editor for
a special issue on quantum computing, I hesitated. Beyond the usual lack of time, I
hesitated since it does not seem that we are close to a working device with significant
capabilities, at least yet. Nevertheless, I eventually agreed as I felt it would be helpful
to review the state-of-the-art at the beginning of the twentyﬁrst century and to take a
broad view of the existing roadmaps. In addition, I have no doubt that in the process
of working towards the quantum computer we are gaining new insight into theoretical
and experimental physics and this too makes such a special issue attractive.
Quantum computing has always fascinated me for reasons far beyond the impres-
sive technological ability to achieve complex quantum preparation, manipulation and
measurement. My interest also lies beyond the rewards of quantum computing as they
may present themselves in quantum algorithms that have been or will be constructed.
The appreciation I have for the ﬁeld of quantum computing stems mainly from the
impression that this ﬁeld has given rise to the widest and deepest look we have ever
taken at quantum theory. I therefore believe that it is this ﬁeld, above any other, which
has a chance to reveal the inner workings of the theory and to perhaps lead, one day,
to a possible extension of the paradigm.
This issue is devoted to isolated massive neutral particles, where by particle we
refer to an atom (hot or cold, ground state or excited) or a molecule, and where by
isolation we refer to vacuum. As hybrid apparatuses show great promise in enabling
synergism between systems, we have also invited work on hybrid conﬁgurations.
R. Folman (
Ben-Gurion University of the Negev, Beersheba, Israel