[ExI] Limiting factor to the Intelligence Singularity?

[Jason Resch]

Could you ask it which quantum gates it believes are not reversible? This
is counter to my understanding:

https://en.wikipedia.org/wiki/Quantum_logic_gate#:~:text=Because%20all%20quantum%20logical%20gates,matrices%20are%20also%20unitary%20matrices
.

Jason

On Tue, Jan 2, 2024, 6:04 AM BillK via extropy-chat <
extropy-chat at lists.extropy.org> wrote:

> On Tue, 2 Jan 2024 at 05:13, Jason Resch via extropy-chat
> <extropy-chat at lists.extropy.org> wrote:
> >
> > All quantum computers are reversible computers, it is required so they
> don't leak energy into the environment which would cause decoherence and
> spoil the result.
> >
> > Jason
> > _______________________________________________
>
>
> The chatbots seem to be saying 'Yes, But...' and sort of disagreeing
> with this statement.
>
> Quote:
> This is due to the fundamental principles of quantum mechanics, which
> dictate that the time evolution of a quantum system is governed by
> unitary transformations, also known as quantum gates.
>
> Unitary transformations are inherently reversible, meaning that they
> can be inverted. This property is crucial for the functioning of a
> quantum computer because it ensures that every operation can be
> undone, allowing the system to return to its initial state after the
> computation is complete. This characteristic is what makes quantum
> computing potentially more powerful than classical computing, as it
> enables a much wider range of algorithms to be implemented.
>
> However, it's important to note that while the quantum gates
> themselves are reversible, the process of measuring a quantum state,
> which is an essential part of the computation process, is not. Once a
> measurement is made, the quantum state collapses into one of the
> possible outcomes, and this process cannot be reversed.
> -----------------
>
> And -
> Quantum computers are not reversible computers in the traditional
> sense. Reversible computing refers to a computing paradigm where every
> computation step is reversible, meaning that it is possible to
> uniquely determine the previous state of the system from its current
> state. This property allows for the elimination of information loss
> and enables the computation to be performed in a manner where there is
> no increase in entropy.
>
> Quantum computers, on the other hand, are based on the principles of
> quantum mechanics and operate using quantum bits, or qubits, which can
> exist in superpositions of states and can be entangled with each
> other. The computation in a quantum computer is typically performed
> using a sequence of quantum gates, which are unitary transformations
> that act on the qubits. These gates can be reversible, meaning that
> they have an inverse operation that can be used to undo the
> computation. However, not all quantum gates are reversible.
>
> While reversible gates are important in certain aspects of quantum
> computing, such as error correction and the implementation of certain
> algorithms, the overall operation of a quantum computer involves the
> measurement of qubits, which is an irreversible process. Measurement
> collapses the quantum state of a qubit to a classical state, and this
> irreversible step is necessary to obtain the final result of a
> computation.
>
> So, while some aspects of quantum computing involve reversible
> operations, the overall computation performed by a quantum computer is
> not reversible in the same sense as classical reversible computing.
> ----------------------
>
> BillK
> _______________________________________________
> extropy-chat mailing list
> extropy-chat at lists.extropy.org
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>
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