<s>
The	O
Cirac	B-Device
–	I-Device
Zoller	I-Device
controlled-NOT	I-Device
gate	I-Device
is	O
an	O
implementation	O
of	O
the	O
controlled-NOT	O
(	O
CNOT	O
)	O
quantum	O
logic	O
gate	O
using	O
cold	O
trapped	O
ions	O
that	O
was	O
proposed	O
by	O
Ignacio	O
Cirac	O
and	O
Peter	O
Zoller	O
in	O
1995	O
and	O
represents	O
the	O
central	O
ingredient	O
of	O
the	O
Cirac	O
–	O
Zoller	O
proposal	O
for	O
a	O
trapped-ion	O
quantum	O
computer	O
.	O
</s>
<s>
Those	O
on	O
resonance	O
with	O
the	O
transition	O
and	O
those	O
that	O
are	O
detuned	O
from	O
the	O
respective	O
transition	O
by	O
an	O
energy	O
difference	O
that	O
corresponds	O
to	O
the	O
energy	O
of	O
a	O
single	O
quantum	B-Language
of	I-Language
motion	I-Language
of	O
the	O
ion	O
chain	O
.	O
</s>
<s>
This	O
requires	O
Raman	B-Algorithm
transitions	I-Algorithm
.	O
</s>
<s>
To	O
suppress	O
transitions	O
in	O
which	O
more	O
than	O
one	O
quantum	B-Language
of	I-Language
motion	I-Language
is	O
transferred	O
,	O
one	O
has	O
to	O
work	O
in	O
the	O
Lamb	O
Dicke	O
regime	O
where	O
the	O
wavelength	O
of	O
the	O
light	O
used	O
is	O
large	O
compared	O
to	O
the	O
size	O
of	O
the	O
wave	O
packet	O
of	O
the	O
trapped	O
ion	O
.	O
</s>
