Quantum computer and quantum computing method
First Claim
1. A quantum computer and method comprising:
- a laminated unit including a plurality of thin films A each containing a physical system group A′
formed of a plurality of physical systems A″
, a plurality of thin films B each containing a physical system group B′
formed of a plurality of physical systems B″
, and a plurality of thin films C each containing a physical system group C′
formed of a plurality of physical systems C″
, the thin films A, B and C being alternately stacked on each other with a thin film A positioned lowest, in an order of A, B, C, A, B, C, A, . . . , each of the physical systems A″
, B″ and
C″
having three different energy states |0>
x, |1>
x, |e>
x (suffix x indicating a state of each of physical systems x″
, and x″
representing A″
, B″ and
C″
that represent types of the physical systems, the physical systems x″
providing physical system groups x′
), a quantum bit being expressed by a quantum mechanical superposition state of |0>
x and |1>
x;
a light source which generates a plurality of light beams having angular frequencies ω
A(E), ye, g, ω
A(E), ye, e, ω
x, ye, gg, ω
x, ye, ge, ω
x, ye, eg and ω
x, ye, ee, and having spectral widths narrower than differences between the angular frequencies, and applies the light beams to the thin films, an angular frequency ω
A(E), ye, g being a |y>
A(E)−
|e>
A(E) (y=0,
1) transition angular frequency of one (physical system group A(E)′
) of the physical system groups A′
that is contained in a lowest one (thin film A(E)) of the thin films A, the |y>
A(E)−
|e>
A(E) transition angular frequency being assumed when one of the physical system groups B′
that is contained in one of the thin films B that is located just above the thin film A(E) is in |y′
>
B (y′
=0,
1), the angular frequency ω
A(E), ye, e being the |y>
A(E)−
|e>
A(E) transition angular frequency assumed when the one of physical system group B′
is in |e>
B, an angular frequency ω
x, ye, gg being a |y>
x−
|e>
x transition angular frequency of a first one of the physical system groups x′
which excludes the physical system group A(E)′
, the |y>
x−
|e>
x transition angular frequency being assumed when a second one of the physical system groups x′
located just below the first one is in |y> and
a third one of the physical system groups x′
located just above the first one is in |y′
>
, an angular frequency ω
x, ye, ge being the |y>
x−
|e>
x transition angular frequency of the first one assumed when the second one is in |y> and
the third one is in |e>
, the angular frequency ω
x, ye, eg being the |y>
x−
|e>
x transition angular frequency of the first one assumed when the second one is in |e> and
the third one is in |y′
>
, the angular frequency ω
x, ye, ee being the |y>
x−
|e>
x transition angular frequency of the first one assumed when the second one is in |e> and
the third one is in |e>
;
a control unit configured to control frequencies and intensities of the light beams; and
a measuring unit configured to measure intensity of light emitted from or transmitted through the physical system group A(E)′
in the thin film A(E) to detect a quantum state of the physical system group A(E)′
.
1 Assignment
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Accused Products
Abstract
A quantum computer includes a unit including thin films A, B and C each containing a physical-system group A, B and C formed of physical systems A, B and C, the films A, B and C being alternately stacked in an order of A, B, C, A, . . . , each of the systems A, B and C having three-different-energy states |0>x, |1>x , |e>x, a quantum bit being expressed by a quantum-mechanical-superposition state of |0>x and |1>x , a light source generating light beams having angular frequencies ωA(E), ye, g, ωA(E), ye, e, ωx, ye, gg, ωx, ye, ge, ωx, ye, eg and ωx, ye, ee, ωA(E), ye, g, a unit controlling frequencies and intensities of the beams, and a unit measuring intensity of light emitted from or transmitted through physical-system group A(E) contained in a lowest one of the thin films A to detect a quantum state of the group A(E).
13 Citations
10 Claims
-
1. A quantum computer and method comprising:
-
a laminated unit including a plurality of thin films A each containing a physical system group A′
formed of a plurality of physical systems A″
, a plurality of thin films B each containing a physical system group B′
formed of a plurality of physical systems B″
, and a plurality of thin films C each containing a physical system group C′
formed of a plurality of physical systems C″
, the thin films A, B and C being alternately stacked on each other with a thin film A positioned lowest, in an order of A, B, C, A, B, C, A, . . . , each of the physical systems A″
, B″ and
C″
having three different energy states |0>
x, |1>
x, |e>
x (suffix x indicating a state of each of physical systems x″
, and x″
representing A″
, B″ and
C″
that represent types of the physical systems, the physical systems x″
providing physical system groups x′
), a quantum bit being expressed by a quantum mechanical superposition state of |0>
x and |1>
x;a light source which generates a plurality of light beams having angular frequencies ω
A(E), ye, g, ω
A(E), ye, e, ω
x, ye, gg, ω
x, ye, ge, ω
x, ye, eg and ω
x, ye, ee, and having spectral widths narrower than differences between the angular frequencies, and applies the light beams to the thin films, an angular frequency ω
A(E), ye, g being a |y>
A(E)−
|e>
A(E) (y=0,
1) transition angular frequency of one (physical system group A(E)′
) of the physical system groups A′
that is contained in a lowest one (thin film A(E)) of the thin films A, the |y>
A(E)−
|e>
A(E) transition angular frequency being assumed when one of the physical system groups B′
that is contained in one of the thin films B that is located just above the thin film A(E) is in |y′
>
B (y′
=0,
1), the angular frequency ω
A(E), ye, e being the |y>
A(E)−
|e>
A(E) transition angular frequency assumed when the one of physical system group B′
is in |e>
B, an angular frequency ω
x, ye, gg being a |y>
x−
|e>
x transition angular frequency of a first one of the physical system groups x′
which excludes the physical system group A(E)′
, the |y>
x−
|e>
x transition angular frequency being assumed when a second one of the physical system groups x′
located just below the first one is in |y> and
a third one of the physical system groups x′
located just above the first one is in |y′
>
, an angular frequency ω
x, ye, ge being the |y>
x−
|e>
x transition angular frequency of the first one assumed when the second one is in |y> and
the third one is in |e>
, the angular frequency ω
x, ye, eg being the |y>
x−
|e>
x transition angular frequency of the first one assumed when the second one is in |e> and
the third one is in |y′
>
, the angular frequency ω
x, ye, ee being the |y>
x−
|e>
x transition angular frequency of the first one assumed when the second one is in |e> and
the third one is in |e>
;a control unit configured to control frequencies and intensities of the light beams; and a measuring unit configured to measure intensity of light emitted from or transmitted through the physical system group A(E)′
in the thin film A(E) to detect a quantum state of the physical system group A(E)′
. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A quantum computing method comprising:
-
preparing a laminated unit including a plurality of thin films A each containing a physical system group A′
formed of a plurality of physical systems A″
, a plurality of thin films B each containing a physical system group B′
formed of a plurality of physical systems B″
, and a plurality of thin films C each containing a physical system group C′
formed of a plurality of physical systems C″
, the thin films A, B and C being alternately stacked on each other with a thin film A positioned lowest, in an order of A, B, C, A, B, C, A, . . . , each of the physical systems A″
, B″
, C″
, having three different energy states |0>
x, |1>
x , |e>
x (suffix x indicating a state of each of physical systems x″
, and x″
representing A″
, B″ and
C″
that represent types of the physical systems, the physical systems x″
providing physical system groups x′
), a quantum bit being expressed by a quantum mechanical superposition state of |0>
x and |1>
x;generating a plurality of light beams having angular frequencies ω
A(E), ye, g, ω
A(E), ye, e, ω
x, ye, gg, ω
x, ye, ge ω
x, ye, eg and ω
x, ye, ee, and having spectral widths narrower than differences between the angular frequencies, and applying the light beams to the thin films, an angular frequency ω
A(E), ye, g being a |y>
A(E)−
|e>
A(E) (y=0,
1) transition angular frequency of one (physical system group A(E)′
) of the physical system groups A′
that is contained in a lowest one (thin film A(E)) of the thin films A, the |y>
A(E)−
|e>
A(E) transition angular frequency being assumed when one of the physical system groups B′
that is contained in one of the thin films B that is located just above the thin film A(E) is in |y′
>
B (y′
=0,
1), the angular frequency ω
A(E), ye, e being the |y>
A(E)−
|e>
A(E)transition angular frequency assumed when the one of physical system group B′
is in |e>
B, an angular frequency ω
x, ye, ggbeing a |y>
x−
|e>
x transition angular frequency of a first one of the physical system groups x′
which excludes the physical system group A(E)′
, the |y>
x−
|e>
x transition angular frequency being assumed when a second one of the physical system groups x′
located just below the first one is in |y> and
a third one of the physical system groups x′
located just above the first one is in |y′
>
, an angular frequency ω
x, ye, ge being the |y>
x−
|e>
x transition angular frequency of the first one assumed when the second one is in |y> and
the third one is in |e>
, the angular frequency ω
x, ye, eg being the |y>
x−
|e>
x transition angular frequency of the first one assumed when the second one is in |e> and
the third one is in |y′
>
, the angular frequency ω
x, ye, ee being the |y>
x−
|e>
x transition angular frequency of the first one assumed when the second one is in |e>
and the third one is in |e>
;applying the light beams to the thin films to operate quantum bits while controlling frequencies and intensities of the light beams; and applying the light beams to the physical system group A(E)′
contained in the thin film A(E), and measuring intensity of light emitted from or transmitted through the physical system group A(E)′
to detect a quantum state of the physical system group A(E)′
to read a quantum bit. - View Dependent Claims (7, 8, 9, 10)
-
Specification